1. This approach also simplifies the introduction of helical symmetry and enables helical deformations to be modelled in a controlled way.

2. The helical axes have significantly different directions in the two structures, and it is not possible to superimpose the helices.

3. Actually, the way helical molecules pack together is not of great interest because their structures are too rigidly determined and unyielding.

4. In differential helical phasing experiments, synthetic oligonucleotides are prepared in which the distance of specific structural elements is systematically varied.sentencedict .com

5. A helical spring has great flexibility and large deformation.

6. Roller kiln using helical gear drive, oil bath lubrication.

7. The helical spring can no longer be used.

8. The polynucleotide chain is helical.

9. In reality, helical springs symmetric pitch near both ends.

10. The structure of the light is a helical line.

11. The two helical nanofibers have absolutely opposite helical senses, but have identical cycle number, coil diameter, coil length, coil pitch, fiber diameter, and fiber cross section.

12. Helical gear with different helix angles is a particular gear is widely used in polishing grinder.

13. Purpose : To study the dual - phase helical dynamic CT signs of hepatic rnc - tastases.

14. Based on the characteristic of cylinder helical spring, it builds the multi-objective optimizing mathematic model of spring under non-linear constraints.

15. Gel mobility anomaly is detected only in cases where the distance of the two elements is in an appropriate helical phase.

16. She first confirmed Watson's hypothesis that in the tobacco mosaic virus small protein sub-units were arranged in a helical fashion.

17. You can conceive of globular protein molecules folding from chains of left- and right-handed amino acids but not helical protein molecules.

18. The standard three knife block can be replaced with a Tersa block that uses helical disposable knives if desired.

19. The content of the graduation paper is to design and simulate the helical antenna.

20. It is probably that the conjugated plane of gossypol is inserted into the base pair pleated sheet of the DNA double helical structure to associate with thymine through weak polar bond.

21. Helical line (port) is in upstream of tangential port, minimizes the deterioration came from outflow of helical line, and obtains the best support of tangential port airflow.

22. Smooth running , big pressure and low moise are obviouusly remaeked as 3 - step helical gear mechanism is abopted.

23. DNA is composed of two polynucleotide chains associated so as to form a double helical molecule.

24. The processing of gear hob used the meshing straight teeth and helical cylindrical gears of cutting tools.

25. The electron motion and energy equations are solved by iteration under the assumption of the electron motion having a helical trajectory.

26. The measurements can be simply made by drawing and measuring the helical line with calipers and a pencil (only applicable for the Traversing Drive of spray-painted iron housing, see Photo 1).

27. This series machine is suitable for batch or single manufacturing column straight pinions, slope pinions, helical gear and worm gear.

28. One side of the clothes-supporting frame passes through the centre hole of the cylindrical helical torsion spring to permeate in the through holes of the big arc clip and the small arc clip.

29. Bilayer gears, crown gears, bevel gear , wheel , Helical, Worm, safety clutch teeth, small modulus gear and steering gear copper server.

30. The bogie for this crane is of H type weldable bogie, the primary suspension of the bogie is of journal box helical spring and wedge snubbing system.

31. A helical scanning technique is used to optimize the data transfer and storage rates.

32. With the helical antenna and a V-shaped plate antenna as a unit antenna and the second-order hexagon as the array, the antennas are integrated and simulated and get the low side-lobe characteristics.

33. Based on the conclusions of statical analysis, the discussion on the stability of helical equilibrium of the rod under axial compression was continued in the category of dynamics.

34. The utility model is capable of simply and quickly detecting whether the joggle between the helical gear and the output shaft gear is satisfied and has simple conformation and convenient usage.

34. is a sentence dictionary, on which you can find nice sentences for a large number of words.

35. The property of bending elasticity deformation for prestressed cylindrical helical spring was studied.

36. A quadratic model of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.

37. The results showed that the buckling configuration was helical curve for the gravitational tubular under the axial compressive force and torque.

38. Objective To evaluate multi - slice helical CT postprocessing technique in scapular fracture.

39. Modal transient response method is used to get the dynamic characters of helical gear on impact excitation . Appropriate reference is provided for optimization of helical transmission system.

40. Conclution: Helical CT portography(CTP) can provide the comprehensive information about the portal vein cancer embolus.

41. At the same time the expressions of critical helical angle were worked out to helical gear pumps with backlash or not.

42. Double helical structure of DNA and types of DNA helices.

43. Conclusion 3D helical CT imaging can provide valuable information in demonstrating the space relationship of zygomatic bone and zygomatic arch fractures.

44. Deformation of helical buckling appeared on rod during down stroke is also analyzed.

45. The dust absorption pore moves transversally by rotating the helical groove pipe.

46. Conclusions: Helical CT scanning detects many indeterminate nodules, but few are malignant.

47. The utility model provides a pipe bending clamping mechanism for a helical type fluorescent lamp glass pipe bender. The pipe bending clamping mechanism comprises a glass pipe clamp.

48. The relations between dielectric, numbers of circles and the characteristic parameters of the helical line were studied.

49. It can reduce the length of the pulse forming line on the premise of forming the same output pulse width to adopt a helical structure.

50. Two novel spherical helical antennas are designed by projecting the planar equiangular spiral antenna onto the surfaces of hemisphere and partial sphere.

51. Features: This network is a woven belt and a right-left helical screw alternately weave, usually connected by straight or curved section string section string.

52. Collagenase is one kind of enzymes that can degrade native helical collagen fibrils or glutin but not degrade others proteins.

53. GK serial helical bevel geared motor has high efficiency and long service life gear. It has feet panels arrangement, flange arrangement and shaft arrangement.

54. A new half spherical helical antenna at the taper mode is presented first time. It has smaller volume and provides good shaped pattern which is suitable for LEO satellite communication.

55. In this paper the dynamic response of helical spring subjected to reciprocating displacement is analysed theoretically.

56. Using ultramicroscopic technique we observed different types of the decorated dislocations, they are straight, zig-zag, helical and looped.

57. The SARS viral nucleocapsid is tubular with a helical symmetry.

58. Any linkage which contains a screw pair, for example, is a spatial mechanism, since the relative motion within a screw pair is helical.

59. There are different impinging tone frequencies corresponding to helical and symmetric flow pattern.

60. A special cylinder-chain is used instead of the polished rod, and ultra-long stroke is achieved through the helical movement of a special chain wheel.

61. Apply the transmission character of helical spring to discuss the solution to the 1-Dof system impacted by short wave for the first time.

62. The analysis results indicate that the impedance and pattern bandwidths of the one-arm hemispherical helical antenna are relatively narrow, and its gain varies acutely in the whole band.

63. A fast algorithm is investigated for calculating the electric characteristics of a helical antenna, and the broadband miniature helical antenna is designed by Genetic Algorithm (GA).

64. This dissertation mainly explores the dynamics of the helical planetary gear trains.

64. try its best to collect and build good sentences.

65. Spiral thickening (helical thickening) The type of secondary wall formation in which a spiral band of lignified deposits is formed on the inner wall of the cell.

66. Results The location, shape and displacement of fragment of zygomatic bone and zygomatic arch fractures were demonstrated stereoscopically through 3D images reconstructed from helical CT.

67. Methods:The hepatic dual phase helical CT scanning of 7 cases of pedunculated hepatocellular carcinoma were reviewed retrospectively.

68. There was vertical flash on inner hole of forging by the forge die for blank of helical bevel gear. It is difficult to remove the flash and machine procedures follow-up.

69. In noninvolute helical gear treatment, it is a better method to measure the normal chord length of the gear by the gear tooth micrometer callipers.

70. The robust parallel helical gearing allows for a rugged , economical agitation solution.

71. In this paper, a new method to measure meshing composite deflections of loaded cylindrical involute helical gear by using high precision clinometer is presented.

72. The pumpkin AP1 polysaccharides have a multi-branched structure and a variety of different linkages between adjacent monosaccharides, which compose the small rings and the helical structure.

73. Helical port also produces swirl by airflow interaction of valve gap and cylinder wall, so swirl number depends on helical line direction of relevant cylinder center.

74. Inking device drive system is also composed by helical gears.

75. The contacting line equations between the ball or tooth of the planet gear and the stator helical surface and the ones between that ball and the rotor worm are also given.

76. The cells can be spherical, rod-shaped, or helical, and some form assemblages of cells, such as branching filaments.

77. The characteristics method of the dynamic response of the helical spring mass systems is studied.

78. In this paper we employ a two-step implicit difference scheme to study numerically ths resistive helical instability of current-carrying plasma column with free boundary.

79. In this paper, the design basis, calculation method and construction feature of the new type composite oil ring with helical spring used in the medium and high speed diesel engine are described.

80. At last, the radiated field of axial-mode helical antenna and double ridged horn antenna is analyzed at this paper.

81. This paper presents a method for machining of taper cutting tools with equal helix angle. The principle of the method is using taper helical curve with equal pitch to approach equal angle one.

82. The two-arm hemispherical helical antenna has very wide impedance and pattern bandwidth, and its gain in the whole band is larger and wave mildly, which show that it is of great applicat...

83. This artical presents the principle and equipment for slotting large modulus gear with helical teeth and herringbone gear with narrow slot cutter groove.

84. The component comprises the medium holding rod, the helical line, a pipe shell, a first diamond film and a second diamond film.

85. The utility model provides a radio-frequency identification super-high frequency helical antenna which relates to a radio-frequency identification system.

86. Objective:To evaluate the accuracy of helical CT pneumocolon in diagnosing and staging colonic carcinomas.

87. Objective To study the value of helical CT in diagnosing congenital cholangiectasis.

88. Objective: To study the scan technique and methods of multi-slice helical computed tomography angiography for peripancreatic vessels.

89. For the steady laminar helical flow of incompressible viscous liquid , the component of curl is a harmonic function , and the existence of a potential functio...

90. Objective:To study application of threedimensional reconstruction and visual simulation surgery on pancreas based on the data of 64-row helical computed tomograph (CT) scanning.

91. Lead screw is the key part in mechanical drive used transfer helical motion into linear motion.

92. The two-arm hemispherical helical antenna has very wide impedance and pattern bandwidth, and its gain in the whole band is larger and wave mildly, which show that...

93. When the interval curve type of adjacent well is cylinder helical, the constraint equation of the near distance spot of adjacent well is simplified further by mathematical manipulation.

94. A helical antenna is a specialized antenna that emits and responds to electromagnetic fields with rotating (circular)polarization.

95. Every customer has difference in the type of drill bits, such as length, helical angle and others.

96. Helical spring math models in the literature have constant pitch angle , which are not accurate enough.

97. According to the theory of single cylindrical helical torsional spring, the cylindrical helical spring in double direction was designed to realize the test of torsion.

98. Heat transfer characteristics of separated helical heat pipe are analyzed in this paper.

99. MHDP experimental ship (HEMS-1) was constructed by IEE, CAS with solenoid superconducting magnet system and helical thruster, which is the first one in the world.

100. Features: crumbs fast - removing and helical cutting, it will greatly increase the processing speed while ensuring quality.

101. The mathematical model of longitudinal vibration bars is directly used for the dynamic analysis of helical springs.

102. A novel feeding system of Tilt-shaped strip line which is very similar to three-dimensional helical structure is proposed to design LTCC Bluetooth antenna.

103. The helical gear has become worked down over the years.

104. The utility model relates to a helical compression spring made by winding tapered wires.

105. A device having a helical form, such as a corkscrew.

106. Herefrom, the influence of plunger diameter and helical angle on dynamic process of engine speed adjusting system is emphatically analysed by means of computer simulation.

107. Therefore, to make the design of multi-lay wire ropes or litter helical angle much more serviceable, it is suggested that the wires should be calculated by the theoretical values deduced herein.

108. Objective To assess the ability of contrast-enhanced multislice helical computed tomography(MSCT) to depict the posterior intercostal artery(PICA).

109. This paper applies the thermal - technical computational model and implements it to big helical tube.

110. The mechanism of suppressing mode competition in gyrotron traveling wave tube amplifier with helical corrugation is illuminated.

111. The nonlinear theory of cylindrical helical spring is verified by the accurate measurement of one.

112. GS serial helical worm geared motor has large ratio and low noise when it runs.

113. Phosphor bronze main jaw pivot bushes with helical grease grooves maximize the pin service life and the laminated jaw side plates enhance strength.

114. Two same scan protocols were prepared : unenhanced helical and enhanced CTA.

115. It is a burring equipment of machining gears, be the same with the tooth parts of spur gears, helical gears, bevel gears, chain wheel and so on.

116. W is attached to a bar, movable vertically around an axis A and suspended by the helical spring F.

117. This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.

118. The helical surface equations of the spherical hob are set up in spherical coordinates. The formulas of the side clearance angle and numerical examples are given.

119. There are all kinds of antennas used in EMC test such as biconical antennas, log periodic antenna, helical antenna, ridged horn antenna and etc.

120. Objective:To evaluate the characteristics of portal vein tumor thrombosis on helical CT and CT portography (CTP).

121. Objective To evaluate the multisliee helical CT manifestations of mesenteric panniculitis.

122. Based on the analysis of industry helical motion, spiral motion model is established, and a "total error" concept is proposed for its error analysis.

123. Equipment with real-time monitoring, arc, interpolation, helical milling, clearance angle, single angle integrated time for 7-15 seconds.

124. Thermal blooms and radiation leaks spewed in helical showers from the vessels.

125. Objective:To evaluate MPR and 3D imaging with helical CT in diagnosis of osteoarticular injury.

126. This paper introduces a optimization method of pinion cutter for cutting helical gears.

127. Interestingly,[http:///helical.html] the sheet contains left - handed and right - handed helical chains.

128. Methods Real time helical scanning and tree-D reconstruction on the work station were accessed on ulcerative colitis cases proved by colonoscopy.

129. This paper introduces a kind of front suspension. It is made up of the main shock absorber with it's helical spring, and the sub shock absorber with it's helical spring.

130. Two types of viral symmetry have been recognized, the cubical symmetry and helical symmetry.

131. The transmission is mechanical double levels controlled with constantly meshed helical gears , and coupling sleeve shift.

132. Virions may be polyhedral or helical and vary greatly in size.

133. Furthermore, the pressure drop in helical baffles heat exchangers gets down with the increase of helical angle.

134. GS series helical worm geared motor has such features as highly standard modular designed, wide range of drive ratio, compact structure, long life time, low noise and high efficiency.

135. This paper describes an experimental and theoretical research on the two-phase flow pattern transition of downflow in vertical helical coils in an air-water loop.

136. According to the main technical requirements of GPS receiving antenna on satellite, the design and the test results for resonant quadrifilar helical antenna are given.

137. Using a helical involute pinion surface to form the grinding worm surface, a helical face gear is formed via a two-parameter worm envelope.

138. They were all treated with straight wire appliance and helical spring to expand clearance.

139. The high laevorotation of L - cystine depends on a specially helical structure of its molecular.

140. The unsteady flow in a draft tube of Francis turbine under the off-design operation is produced by the dynamic behavior of a helical vortex rope with the dead core.

141. Compression Springs are open-coiled helical springs that work by resisting compressive force.

142. A pair of meshed crossed helical gears usually have the same hand; that is , a right-hand driver goes with a right-hand driven.

143. This paper makes an analysis to the stable response of helical spring mass system under impact load.

144. These spiral teeth engage just like helical teeth: the contact starts at one end of the gear and progressively spreads across the whole tooth.

145. The influence of the impedence mismatching between the joint section in pulse forming line and the helical line on the voltage waveform of the diode was analyzed.

146. To adopt helical gear lubricating pump is one of active measures for solving lower volume efficiency of straight gear pump in 12VE230ZC diesel engine.

147. Moreover, the stability of helical conformation of poly(phenylacetylene) decreased with the increasing temperature.

148. Making use of the points measured on the drum helical curve of concrete-mixer truck, the helical angle formula of the helical curve is obtained by means of least square method.

149. Helical antenna satisfies the demand for the stubby antenna miniaturization. It has a rapid development in recent years.

150. Furthermore, we know that two sticky ends form the classic helical DNA structure when they cohere, and these helical stretches of DNA are relatively stiff.

151. The double-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, and can squeeze fish stock and expel most of the water and fat.

152. As indicated in the section on simple machines, a screw acts with a wedging action and consists of a circular cylinder(or truncated cone)with a helical groove in it.

153. The dynamic stress in helical spring has been analyzed with a spatial mechanical model for bent lever and an analytic solution for the partial differential equation has been found.

154. Materials and Methods:The enhanced Helical CT finding of malignant SPN 50 cases and inflammation SPN 26 cases and tuberculoma 12 cases by proved operation or pathological were studied retrospectively.

155. Objective : To discuss the value of multi - slice Helical CT in diagnosis of non - calcified costal cartilage fracture.

156. In the wake of the diminution of helical lead angle the influencing extent of the variation of materials filling rate inside the screw conveyer on the screw shaft deflection was reduced.

157. Then,[http:///helical.html] the paper accomplish the accurately 3D-modeling of the four generally used types of gears: cylindrical spur gean cylindrical helical gean straight bevel gear and curved-tooth bevel gear.

158. Based on the forming principle of stranded wires helical spring and the current problems in the manufacturing process, a new design scheme for the number control machine is put forward.

159. Conclusion: Multi-slice helical CT was effective for differentiating clear cell from non-clear cell carcinoma, but has little value in differentiating papillary from chromophobe RC.

160. The measured results show that the main flow in the hydrocyclone is a three dimensional helical downward movement with an air core directly connected with the underflow pipe.

161. For example: screw lift (worm) - (2.5 tons -200 tons), SN series of small hardened helical gears geared motor , high efficiency (95%), torque, small in size.

162. This series machine is suitable for batchsingle manufacturing column straight pinions, slope pinions, helical gear gear.

163. Gives a thorough introduction to the kinematics, design and stress analysis of spur gears, and a simple introduction to helical, bevel(), and worm gearing.

164. In a globular protein, certain portions of the chain are coiled into helical segments.

165. A practical mechanism for the core-pulling of inside groove was presented. The core-pulling was achieved by applying the deformation of helical spring steel sheet during the ejecting process.

166. Objective: To contrast data of reconstruction in lung helical scan and general CT scan, to evaluate the value of its clinical application.

167. Objective To study the diagnosis value of helical CT singlet hilum of lung and mediastinal lymphadenectasis.

168. Helical - corrugated pipe can deliver more sediment with power input than either standard corrugated or plain pipe.

169. Conclusion Multislice helical CT is very useful for the diagnosis of mesenteric panniculitis.

170. The technology of pulling forming method of helical vane is introduced.

171. The paper presents an integrated mathematical model for producing a rotating cutter with constant helical angle.

172. Insert nut is designed for rapid installing into thermo-plastics by means of ultrasound. Its two opposite helical knurl bands provide a combination of high torque and pulling out resistance.

173. In 1953, Watson and Crick set forth their hypothesis for the double - helical nature of DNA.

174. Helical antenna has not only almost identical to the resistive input impedance in broad bandwidth, but also works by the end of super-gain front lobed map in the same frequency band.

175. Among the synthetic helical polymers, polyacetylene derivatives with conjugated main chains and functional pendent groups, have gathered much more attention.

176. A concept of gain factor is in- trduced to analysis the gain frequency characteristics of sectional-uniform helical antennas. Theoritical and experimental results are in good agreement.

177. In the dissertation, comprehensive investigation of the helical FCG and of the power conditioning circuit is carried out theoretically, numerically and experimentally.

178. Helicity is the basic physical pattern for the maintenance of atmospheric activities. Boundary layer fluids, turbulences, severe storms and tropical cyclones are highly helical in their structures.

179. It is concluded with the application method of helical spring parameters and the simulation method of high frequency response of suspension in wave theory.

180. According to the principle of fluid mechanics, the law of laminar helical flow of power-law fluid in eccentric annuli is studied intensively in this paper.

181. To discuss the diagnostic value of helical CT during arterial portography(CTAP) combined with hepatic arteriography in detection of hepatocellular carcinoma( HCC).

182. Based on the analysis of the helical spring dependent suspension, it is presented that the theoretical expression among the main parameters of the rear axle and the heeling angle stiffness.

183. The grinding wheel finishing device for the helical bevel gear grinding machine has simple structure, high rigidity, more stable finishing precision and high finishing efficiency.

184. Helical spring mass system (HSMS) is widely used in almost all of mechanical and electrical products due to its structure feature and elastic buffer ability.

185. The CT quality control phantom was employed to analyze the stair step artifact. Helical scan was done with different slice thickness, pitch, increment and phantom position.

186. Helical gears are used to transmit motion between parallel shafts.

187. A helical planetary set reduces transmission noise level by up to 10 dB.

188. In this paper, the trapping property of external helical gear pump was investigated in detail,[] and the tooth flank equation of helical gear pump without backlash was presented.

189. This paper chooses a normal mode helical antenna to replace the short dipole antenna to improve efficiency.

190. The design of highly efficient double-shaft screw mixer was introduced. The principle of double-shaft helical blade arrangement and the key parameters were investigated.

191. This method can also be applied to helical gear, bevel gear, worm wheel and worm.

192. The results showed that BK chromosomes reveal a multiple double strand helical structure.

193. Objective To explore the diagnostic value of helical CT multistage scanning in superior mesenteric vein (SMV) infarction.

194. Objective To analyse the normal helical CT appearances of the bronchial stump or anastomosis after pulmonectomy for central bronchial carcinoma.

195. The azimuthal phase term of the LG modes results in helical wave fronts. The phase variation along a closed path around the beam center is .