(1) Iron is attracted to a magnet.

(2) Polarity is inherent in a magnet.

(3) He picked all the pins up with a magnet.

(4) A magnet attracts iron and steel.

(5) The region has become a magnet for small businesses.

(6) This disco is a magnet for young people.

(7) Beijing is a magnet for tourists.

(8) A magnet attracts steel.

(9) The scent of flowers acts as a magnet to bees.

(10) You can magnetize a needle by rubbing it with a magnet.

(11) She drew men to her like a magnet.

(12) A magnet separates out scrap iron from the rubbish.

(13) Open wounds act like a magnet to flies.

(14) The place is a magnet for tourists.

(15) The actress was the magnet that drew great audiences.

(16) Certain metals are attracted to a magnet.

(17) Buckingham Palace is a great magnet for tourists.

(18) The rabbits in our backyard were a magnet that attracted all the children in the neighbourhood.

(19) In the 1980s the area became a magnet for new investment.

(20) A magnet has polarity.

(21) The United States has always acted as a magnet for people seeking fame and fortune.

(22) Prospect Park, with its vast lake[/magnet.html], is a magnet for all health freaks.

(23) Magnet and Southern, duvet covers.

(24) The swimfeeder acts like a magnet.

(25) The pistol acts like a magnet to your hand.

(26) Ever notice what a visual magnet a mirror is?

(27) Some of these things stick to a magnet.

(28) Even now it is the magnet that draws the rural peasants and small businessmen looking for work and casual labour.

(29) The man who attracts luck carries with him the magnet of preparation.

(30) Somehow sensing this connection, clerics have been drawn as if by a magnet to the rails.

(1) He picked all the pins up with a magnet.

(2) The region has become a magnet for small businesses.

(3) Beijing is a magnet for tourists.

(4) The scent of flowers acts as a magnet to bees.

(5) You can magnetize a needle by rubbing it with a magnet.

(6) The actress was the magnet that drew great audiences.

(7) Certain metals are attracted to a magnet.

(8) Buckingham Palace is a great magnet for tourists.

(9) The rabbits in our backyard were a magnet that attracted all the children in the neighbourhood.

(31) The plastic bag can be removed when you have finished and the magnet will still remain clean.

(32) The plan involved a variation of the magnet school concept.

(33) Whatever the attraction, the boys find that their house has become a magnet for aliens.

(34) Throughout the 1980s the North-East has become a magnet for new investment.

(35) The Isle of Skye, as well as being a magnet for walkers, also attracts its fair share of strange tales.

(36) John How was a solid good preacher but not a magnet to multitudes.

(37) It would be a magnet, like Victor said, pulling at my fingers and the palm of my hand.

(38) In November 1986, the District Court endorsed a marked expansion of the magnet school program.

(39) The unthankful heart... discovers no mercies; but let the thankful heart sweep through the day and, as the magnet finds the iron, so it will find, in every hour, some heavenly blessings! Henry Ward Beecher 

(40) Like the electron, the muon acts like a tiny bar magnet.

(41) Airedale Holdings' banks put the company into administrative receivership and have taken control of its subsidiary, the kitchens retailer Magnet.

(42) The Liverpool waterfront has become a magnet for tourists from near and far.

(43) Comaneci's gym is a magnet for young gymnasts from around the country.

(44) The cloud is like a magnet so the water goes through the cracks and goes up./magnet.html

(45) The current in the primary winding is induced by the rotating magnet.

(46) But one has to be careful, a piece of derelict land can be like a magnet in attracting further dereliction.

(47) His strength drew her to him like a magnet, until her eyes followed his every move.

(48) By the turn of the century, Los Angeles was already a supercharged magnet.

(49) Certain men - husbands not excepted - seemed drawn like a magnet to a female in her circumstances.

(50) Some eligibility criteria would be set to prevent the city from becoming a magnet for the uninsured.

(51) When the suitably insulated conductor is wound round a rod of soft iron it forms a bar magnet.

(52) Participation by suburbs that once strongly supported magnet projects is in question.

(53) This magnet for unwanted paper will fill up and overflow with monotonous regularity and should be abolished.

(54) To go onstage in the flag is to be a 50p magnet, nomatterwhat it might mean in an ideal world.

(55) He attended a magnet junior high school for gifted children in Los Angeles and spent a year in high school in Reseda.

(56) Clamp it between the two parts of an algae magnet and sink it to the bottom of the tank.

(57) Redundant miners are not the only ones drawn by the drugs magnet.

(58) The metal was a magnet that attracted people from all over the world.

(59) A place for all kinds of wildlife to stop off and drink, it will attract them like a magnet.

(60) As the population grows, we become a magnet for the big, impersonal outlets.

(61) It works along the same lines as an algae magnet where the two magnets attract each other through the aquarium glass.

(62) This is a magnet to burglars and you need to take all the precautions you can to control access.

(63) Although we have approved desegregation plans involving magnet schools of this conventional definition, the District Court found this insufficient.

(64) The Allies seemed to be drawn as if by a magnet to our local villages.

(65) Government service also brought Mr Packard unaccustomed public attention and made him and his company a magnet for controversy and protest.

(66) She was drawn to him like a magnet to the north.

(67) Their main concern is with buy-outs of complete listed companies - such as Magnet, Virgin and International Leisure.

(68) The centre of town seemed to draw them back like a magnet.

(69) A central core of keen and well-informed supporters whose enthusiasm, knowledge and confidence will draw new members like a magnet.

(70) They are a magnet for tourists, experienced boaters and amateurs alike.

(71) Outside the shop at first floor level was a magnificent six-foot magnet.

(72) Not surprisingly these force patterns resemble the pattern of magnetic field lines across the aperture of a quadrupole magnet.

(73) View from the top: The monstrous folly that's a magnet for tourists.

(74) Over the past two decades this Wisconsinsized country has become a magnet that has drawn social activists from all over the world.

(74) try its best to gather and build good sentences.

(75) Most are attracted by the splendour of the city's colleges, but they also prove a magnet for organised crime.

(76) It's a magnet for tourists and the sheer number of visitors is posing a threat to the area.

(77) The numerator of this expression, M is the magnet flux linked with the phase winding.

(78) Have the children see whether the magnet will attract paper clips, coins etc.

(79) The sudden warmth, meagre though it was, drew Isabel like a magnet.

(80) The safe coefficient of magnet lifter is 3.5.

(81) Permanent Magnet Lifter is a kind of lifting gear.

(82) Explore the interactions between a compass and bar magnet.

(83) Bar magnet magnetic sense of line distribution.

(84) The strong magnet magnetized the iron shavings.

(85) In this paper, the mathematical models of open loop system and feedback closed-loop system of a micro feed servo system using magnet are studied.

(86) In the subject, permanent magnet linear synchronous motor ( PMLSM ) servo system is a researched object.

(87) Bipolar Hall Switch Sensor magnet polarity is no need to distinguish, with great flexibility and convenience.

(88) However, the nonlinearity of the octopole magnet changes the dynamic aperture, and lowers the injection efficiency.

(89) Thus permanent magnet synchronous motor is widely regarded in Hybrid electric vehicle ( HEV ) control field.

(90) The permanent magnet meter can be used as an ammeter or a voltmeter.

(91) The microneedle is fabricated by MEMS technology with SU-8, and the permanent magnet array is fabricated by electroplating technology. Processes of these two technologies are introduced in detail.

(92) The fluid is a strong magnet and movable material, which can permeate through the small lateral root canals and the dentine.

(93) The utility model is composed of an annular permanent magnet (1), a magnetic conductive gasket (2), and a cooling tube, which are arranged in a circular column target pipe.

(94) Due to stator resistance and armature reaction, the output voltage of conventional permanent magnet synchronous generator varies with the load.

(95) She attended Whitney Young, Chicagos first magnet high school, where she was student council treasurer, a member of the National Honor Society and a four-year honor roll student.

(96) The Indian mustard plant (Brassicaceae5) is believed to act as a magnet for essential minerals and metals in the soil, which we don't get enough of in our food today.

(97) The dial has to be suitable for the demonstration of the inductive current from the slow input and output rodlike magnet in coil of 300 spirals.

(98) A non - magnetic substance cannot be made into a magnet.

(99) The rotation of the measuring element (35) is analyzed based on the subsiding behavior thereof after the drive magnet (24) is switched off.

(100) The natural energy health care magnet has overcomes one's fears calms the nerves, the clever ear clear vision, regards the thing dim-sighted, has a dizzy spell and so on the effects.

(101) It has not only the advantages of the ordinary permanent magnet starter motor, but also some other advantages, such as higher starting torque, higher no load speed, and lower cost.

(102) The said arc source for multi-arc ion plating and diffusing apparatus includes tubular cathode target and magnet steel strips inside the tube, which are parallel to axis and rotate integrally.

(103) What the effects does low intensity constant magnetic field strapping and application with permanent magnet have on the growth of tumor in the inoculated animals?

(104) The position is not detected via a positioning magnet but via an inductive oscillating circuit.

(104) is a sentence dictionary, on which you can find good sentences for a large number of words.

(105) This paper introduces a magnet - absorbing wall - climbing robot for efficiently maintaining turbine blades on site. The robot uses creep feed grinding to machine weld lines.

(106) A theoretic formula on how to change the geometrical shape of a magnet and augment the range of uniform magnetic field is brought forward in this paper by simulation.

(107) The improvement of the original 1.2m cyclotron to enhance its accelerated particles-energies with increasing main magnet exciting current and reshimming the magnetic field is described.

(108) There are two causes or cogging force in linear permanent magnet motors, resulting from the slotting and the finite length of the iron-cored.

(109) Homogeneous magnetic field is necessary in NMR magnet. In general shimming magnetic field is by experience. So it's difficult to shim . It depends on experiences frequently.

(110) Each atom behaves like a tiny bar magnet , and when the crystal is cooled to near absolute zero, the atom-magnets align.

(111) The double-phase composite material of the aluminum alloy and the neodymium iron boron type rare earth permanent magnet material is prepared by using a powder metallurgy method.

(112) A piano keyboard acts like a magnet to him, he says.

(113) In this paper, effect of alone defect contained in one-dimension iron magnet body on the frequency shift of the spin wave is discussed .

(114) A model of the beam centroid motion in a linear induction accelerator (LIA) was developed. It calculates the track of the beam centroid under the condition of cell magnet misalignment.

(115) After 70 years of development, has now become the world's largest manufacturers of magnet wire, the largest communications wire, cable manufacturers.

(116) The optimization design of a late - model machine - surface permanent - magnet synchronous motor has been accomplishmented.

(117) To keep leakage flux to be constant, the relation is analyzed between the air gap length and the non-magnetic material thickness with the rare earth magnet thickness under the air gap length variety.

(118) The edge effect of the main magnet influences the imaging quality seriously.

(119) The utility model comprises a SCM provided with A/D convertor and 3 rotor magnet steel position sensor signals taken from the counter electromotive force of the motor rotor winding.

(120) The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.

(121) The structures and the design of ITER superconducting feeder system, which is an important reference to the feeder design for other superconducting magnet system, are described.

(122) The equations for magnetic-force pump magnet steel axial direction length, circumferential length, and radial thickness were developed after the analyses of the experiment results.

(123) A linear permanent magnet brushless DC motor ( LPMBDCM ) composed of an armature and stator was introduced.

(124) It is claimed that you will attract the positive energy and you will be like a magnet for this powerful energy.

(125) This product adopts the technology of single excitation, the magnet track is shallow, so the penetrating power of magnet is weak, it can avoid the conglutination of more sheets.

(126) The hybrid magnet was made by combining electromagnet with permanent magnet ( PM ).

(127) A through hole (15) is formed through the center of the rotary magnet (14), so that the pin part (13) can be inserted into the through hole (15).

(128) Commutation of the motor is achieved by use of a single Hall element sensor to detect the position of an alternating-pole ring magnet.

(129) The system adopts 80C31 MCU as the main controller, hybrid Rare-Earth permanent magnet stepper motor as the execution component, bio-passage rotary transformer as antenna position sensor.

(130) Charter schools, voucher plan , magnet schools and home schools are the form of school - selecting system.

(131) Confirming about the working point of the permanent magnet is an essential premise in calculating of the permanent magnetic circuit.

(132) From the magnetic theory , the article points out that it is made primary analysis that landing screen effect of colour display from earth magnet will cause poor colour purity.

(133) The internal model of the permanent magnet synchronous motor (PMSM) is a high order complicate system with parameter variable, nonlinear, strong coupling and multivariable.

(134) Finally, we study the transport properties of single molecular magnet driven by spin bias voltage.

(134) is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

(135) This characteristic accentuates the differences between aluminum and copper when they are used as insulated magnet wire in a ballast coil.

(136) The next day Hillary and I attended the dedication of William Jefferson Clinton Elementary Magnet School in Sherwood, just outside North Little Rock.

(137) The accurate calculation of cogging torque assists in optimizing the design of claw pole permanent magnet synchronous motors.

(138) This thesis proposes a sensorless drive system a permanent magnet synchronous motor.

(139) Centreing around the permanent magnet synchronous motor, two parts of researches on the motor optimization design and the drive control are systematically introduced in this dissertation.

(140) The microneedle is fabricated by MEMS technology with SU-8, and the permanent magnet array is fabricated by electroplating technology.

(141) For reducing detent force of permanent magnet linear synchronous motors(PMLSM) resulting from slot effect and end effect.

(142) This paper discusses the control of output maximization of interior permanent magnet synchronous generators for variable-speed wind generation system.

(143) The invention discloses a magnetic locking mechanism for weapon, comprising driving spring, casing, resistance iron for back seat, magnet, gun action and gun barrel.

(144) Magnetism of the bar magnet is produced by the surface molecule electric current.

(145) This whole thing took about two full days time, about $100 in magnets and $30 in magnet wire .

(146) If the liquid in the diaphragm cavity to promote too little to promote liquid, the magnet will move to the ZSL trigger, the trigger output of a pulse signal to the PLC control box.

(147) The voice coil motor(VCM) in high bandwidth actuator assembly has special voice coil construction and magnet arrangement.

(148) I want to show you the Crab Nebula, and I think I will also show you the beautiful flywheels in the Magnet Lab.

(149) Considering that such a magnet usually works in the close-gap position, so in contrary to the method generally adopted, the reluctance of iron has been taken in-to account in the fundament...

(150) Reducing the total harmonic distortion (THD) of the magnet current in the parallel resonant network is the key technique for the magnet current tracking accuracy.

(151) Cogging torque is one of the main concerns of permanent magnet motor.

(152) The MF voice coil is of copper-coated aluminium ribbon, expensively edge-wound over a polyimide former to increase sensitivity by maximising the amount of copper in the magnet gap.

(153) According to the model of permanent magnet magnetic dipole, we have concluded the axial magnetic field distribution of square magnet and discussed the demagnetizing factor inside the magnet.

(154) The conclusion can be used to direct the design of electromagnetic relay with permanent magnet.

(155) The stability of a liquid helium free superconducting magnet could be analyzed using the adiabatic stability criterion because there is no cryogen in the system.

(156) A bar on horseshoe magnet is called a permanent magnet.

(157) The continuous rotating magnet field is transformed into discrete step field in the torque vector control and the electromagnet torque is controlled by means of regulating the stator current.

(158) Because of limited coercive force of permanent magnet, the non-reversible demagnetization of it must be prevented.

(159) The paper preresents a novel current regulation algorithm for Interior permanent magnet synchronous motor field - weakened region.

(160) Due to the interaction between the permanent magnet and slotted armature lamination, there exists cogging torque in slotted permanent magnet motors, which may cause noise and vibration.

(161) Possessing both magnetisation of solid magnet material and flowability of liquid, it is widely used in engineering fields, such as sealing, lubracation, damping, etc.

(162) A magnet is between the jointer and the control mouth.

(163) Emphatically reviewed four systems of permanent magnet material:Al-Ni-Co magnet, ferrite magnet, rare-earth magnet and glue magnet.

(164) A new high power-density brushless permanent magnet traction motor with water-cooling stator frame as well as design guideline is presented.

(165) Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.

(166) In this paper is proposed the method of spiral distribution of magnet steel,[http:///magnet.html] which can ensure the symmetry of potential waveform amplitudes under adjacent poles.

(167) Finally, through the experiment the magnet steel eddy current loss is known that is very big to the REPMSM rotor temperature rise influence.

(168) Larger magnet wire can then be used which increases the power of the electric motor using the armature having the larger magnet wire.

(169) The rare earth permanent magnet brushless DC square wave motor is a new type of motor.

(170) Based on instantaneous power analysis, an instantaneous power control method of permanent magnet synchronous machine(PMSM) is proposed in this paper.

(171) The needle is made of some parts such as minus pressure needle theca , polar mark, transparency magnet, forceful magnetic needle, defensive rubber circle and so on.

(172) The bar magnet helps easily identify different magnetic poles, and has the advantages of convenient location and use.

(173) A calculation method based on the concept of "senary" is presented, to start up a contra-rotative rare earth permanent magnet brushless direct current motor (CR REPM BLDCM).

(174) A novel mathematical model for a dual three - phase permanent magnet synchronous machine ( PMSM ) was proposed.

(175) Utilizing rare-earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size.

(176) Closets are a magnet for clutter so get some basic closet cleaning and organizing tips in this free house cleaning video.

(177) Utilization of the Nd-Fe-B permanent magnet in DC servomotor has resulted in improved efficiency and increased power-weight ratio, reduced time constant.

(178) After the first magnet brake has been invented, several interesting modifications have been invented related to the magnet brakes.

(179) Firstly, using finite element analysis to describe that cogging force was the main cause of force ripple in tubular permanent magnet linear motors.

(180) Because the dynamic character of PMA is affected by permanent magnet and exciting current, in this paper, new mathematic model and equation are established and the calculation result is analyzed.

(181) High School graduate or GED equivalent or three years of manufacturing experience, preferred in magnet wire operations.

(182) The construction and the operating principle of the axial split phase hybrid type permanent magnet stepper motor are analyzed.

(183) The author intend to find a solution for the computation of non-linear magnetic fields, improve our CAD software, and in addition design a magnet system for a gyrotron.

(184) The invention provides a cooling method and a device of a magnetic resonance imaging system. The magnetic resonance imaging system comprises a magnet, a gradient coil and an RF control console.

(185) Permanent magnet vehiele separators according to its clamping. there of the different structure, can be divided into the downstream type, counter-current type and half counter-current type 3 kinds.

(186) Line - start permanent magnet synchronous machine has high efficiency and power factor.

(187) The structure and working principle of the permanent magnet mechanism are proposed.

(188) The action of the magnetic force moment and the magnetic force on the bar magnet in the magnetic field can be considered as that of wire circles through the magnetic field.

(189) Its mini-bot uses surgical tubing and a neodymium magnet — really — to climb the steel pole with the utmost efficiency, reaching the top in 1.3 seconds.

(190) A doubly achromatic magnetic deflection system with three sector magnet is described.

(191) If the current was interrupted, the magnet immediately became unmagnetized.

(192) The cryogenic ground support equipment (CGSE) is used to cool down the second stage alpha magnetic spectrometer ANS02 magnet and to fill the superfluid helium into the magnetic Dewar of AMS02.

(193) My 12 year old had a lesson in his science course later that day that mapped magnetic fields of a little bar magnet.

(194) The earth may be thought of as a gigantic magnet.

(195) The freckles over her grappling were an added magnet rather than otherwise.

(196) The form of the stable geomagnetic field is like that of a bar magnet at the center of the Earth.

(197) Over 4000 years ago[http://], the laboring people of ancient China noticed the attracting property of the natural magnet.

(198) In this article the equations of the instantaneous current, which take account of the thermal effect during a sine-shaped pulse current flowing in the magnet, are presented for the first time.

(199) The main factor is thrust ripple of permanent magnet liner synchronous motor.

(200) In this paper the relationship of current with loss of surface permanent magnet synchronous motor (SPMSM) is achieved by considering the copper loss and iron loss.

(201) This paper introduced the process technology of resinoid diamond grinding wheel for grinding rare earth permanent magnet materials.

(202) To solve this problem, a new method (EMDES), i. e. the fuzzy case design method, is proposed in this paper and applied to permanent magnet direct current motor design expert system (PMDCMDES).

(203) Chen Wenge. Structure Design and Test Analyzing of Toroidal Field Magnet System for Superconducting Tokamak. Hefei: Institute of Plasma Physics, Chinese Academy of Sciences, HT7U. IPP2002(in Chinese).

(204) And recommended simply the ductile Fe-Cr-Co system permanent magnet material, mid-hard magnet material, Mn-Al-C permanent magnet material and crystallite permanent magnet material.

(205) The annular magnet is embedded into an inner cavity of the rubber ring, the plastic cover disk is covered at the back face of the rubber ring.

(206) The structure of the magnet was investigated by XRD, optical microscope, TEM and SEM, and its demagnetization curve was tested by magnetograph.

(207) This paper introduces a new type of magnetic flux measurement devices, which uses fluxmeter with measurement coil and measuring devices to measure internal magnet flux.

(208) Nanocomposite permanent magnet exhibits excellent magnetic properties combining high coercivity of permanent magnetic phase with high saturation magnetization of soft magnetic phase.

(209) The experiments that charging current of magnet enhancement corona discharge is greater than the traditional one.

(210) Unload before stop the machine, or there will be left magnet. Next time when use, magnetize with accumulator cell or dry cell battery.

(211) The influences of reducing the distance between the target and magnet exit and the effect of changing injection angle of the magnet have been discussed to obtain the more compact deflecting magnet.

(212) Preparation of high performance Nd Fe B sintered magnet by strip casting ( SC ) process was studied.

(213) Structure design and heat transfer analysis for the cryostat of superconducting magnet is mainly discussed in the paper.

(214) The dissertation proposes control technology of rare earth permanent magnet brushless motor ( BLDCM ) in railway switch.

(215) Applanation structure are used in torque motor to get a high output torque and low speed characteristic. The ratio between armature magnet core length and outside diameter just little.

(216) The utility model is composed of an annular magnet, a rubber ring and a plastic cover disk.

(217) The vascular dementia model in rats was reproduced by injecting Fe particles into the sublingual vein, after fixing a magnet on the skull surface.

(218) The test of the software verifies that the optimal design of lifting magnet will reach higher technical and economical index than the products available with the same standard.

(219) Glass is separated by hand at the dump and ferrous metal removed by magnet.

(220) Highly experienced in permanent magnet carbon brush, commutator, and other critical motor component & material selection.

(221) You can hang the lamp on wall through its back case's hook or mounting-hole, or install it by using magnet.

(222) When you bring an object close to a grid line, the object snaps to the line much in the same way as iron sticks to a magnet.

(223) Jamie, a sharp-witted, sexy young woman, is a self-described "jerk magnet."

(224) It introduces that how to watch and measure the hysteresis loop-line, residual magnet and coercive force of ferromagnet through an oscillograph.

(225) Magnetic heading sensor V2XG, which senses magnet field with two magneto-inductive sensors, is inexpensive and is easy to integrated into other system.

(226) The thrust and levitation force in linear synchronous motor with hybrid magnet were analyzed.

(227) The exact formula set for the midplane of the uniform-field wedge magnet is derived.

(227) Wish you can benefit from our online sentence dictionary and make progress every day!

(228) The inverse effect also occurs: a spinning bar magnet will cause a suspended copper disk to rotate.

(229) Dr. Roger Bannister, the first man to run a mile in less than four minutes, claims to have beaten cramp by carrying a small magnet around with him.

(230) The test proved that the magnet can operate at 5T. The magnet cryostat has a good thermal insulation performance.

(231) This system adopts 16 bits MCU as the core control device to achieve a bar magnet exactitude measure of small range displacement.

(232) Rare earth metals, such as metallic neodymium and metallic didymium (metallic praseodymium -neodymium), are used for rare earth magnets, mainly neodymium-iron-boron magnet.

(233) A capacitor (123) is electrically connected with diodes (124,125) and field winding (122) of field magnet and armature.

(234) In 2004, Mr. Huffman had a magnet surgically inserted into his fingertip to study the utility of cochlear implants for the hearing-impaired.

(235) Move a bar magnet near one or two coils to make a light bulb glow.

(236) Simultaneously, the rotary magnet has the stirring action for the water, and therefore, the drinking water in the cup can be magnetized sufficiently.

(237) The Earth’s magnetic field is roughly like that of a bar magnet, with two opposite poles.

(238) The power supply is an important part of the superconducting magnet system , it affords both steady current and reliable protection for the superconducting magnet system .

(239) According to the working environment, a reality structure scheme using permanent magnet adsorption and twin pedrail type structural cleaning robot is put forward.