单词 | Aperture |
例句 | 1. The camera adjusts the lens aperture and shutter speed automatically. 2. What aperture are you using? 3. Binoculars of this aperture are very expensive. 4. For flash photography, set the aperture at f.5.6. 5. Through the aperture he could see daylight. 6. Into this aperture a droplet of mercury was poured. 7. The soldier fired the rifle through a narrow aperture in a pile of sandbags. 8. Open up the lens aperture to maximize the brightness of the shot. 9. I had to get the aperture right. 10. The telescope has an aperture of 2.4 metres. 10. try its best to gather and create good sentences. 11. This was a covering curtain with a central aperture which left the arena open to the sky. 12. Binoculars of this aperture cost a great deal of money. 13. Presumably there was a glazed aperture in the back to illuminate the upper deck. 14. In a sort of aperture she saw a white baby hanging upside down from a nail of light. 15. Lightning flickered in the ragged aperture where the ground-floor staircase door had been. 16. As with telescopes, the larger the aperture the greater the light-grasp, but there are hazards too. 17. This covered an aperture in the bodywork to provide internal illumination. 18. Aperture priority mode works in much the same way. 19. The greater the relative aperture, the lens becomes "fast." 20. The mask has mirror effect; designed with aperture bars. 21. For Aperture priority video, the procedure could not be simpler; just set Aperture Priority mode, select the aperture, press the Viedo button and you get that aperture. 22. Crashing and echoing, the filing cabinet toppled end-over-end down the stairs as the thing heaved itself through the door aperture. 23. With increased power, the field of view becomes smaller, and with increased aperture the binoculars become heavier. 24. The remains of the blowing house, with the bricked-up water wheel aperture, is still visible. 25. The spill in my hand was beginning to sputter, but-I noticed that the cloverleaf aperture was now glowing pinkly. 26. This style of lens is designed to give optimum performance at the widest aperture. 27. Its programmed exposure system then sets the most suitable shutter speed and aperture under the prevailing circumstances. 28. Jasper stood looking at the bell rope which came out of a small square aperture at what was the base of the campanile. 29. Not surprisingly these force patterns resemble the pattern of magnetic field lines across the aperture of a quadrupole magnet. 30. The three of them watched in breathless silence as the doors reached their maximum aperture. 1. The camera adjusts the lens aperture and shutter speed automatically. 2. Into this aperture a droplet of mercury was poured. 31. In this paper, using the generalized HuygensFresnel diffraction integral, the focusing properties of twisted GaussianSchell model beams through an aperture lens have been studied in detail. 32. The effects of lighting wavelength, coherent coefficient, aperture number and defocusing to image quality can be studied with this method. 33. However, the nonlinearity of the octopole magnet changes the dynamic aperture, and lowers the injection efficiency. 34. If you know the focal ratio but not the focal length, you can calculate it: focal length is the aperture (in mm) times the focal ratio. 35. The combination of telephoto capabilities and an f/2.8 aperture throughout the zoom range up to 500mm makes this a great lens for wildlife, sports and for you stargazers, astrophotography. 36. Moreover, cathode emission is quite sensitive to structure parameters such as dielectric layer' thickness, anode voltage and gate aperture; therefore, it is hard to guarantee the emission uniformity. 37. However, you don't expect weak quality of the maximum relative aperture, high level of chromatic aberration, significant coma and noticeable astigmatism along with huge vignetting. 38. Coefficients of dynamic stress concentration change with lining aperture, thickness of lining, wave number and type of lining. 39. The first meridian circle of China has been installed at CSAO in April 1990. This horizontal reflecting transit circle with 240ram effective aperture is developed by CSAO, NAIF and CUO. 40. We focus on the focal properties including the intensity and the partially coherent and polarized properties of such partially coherent vortex beams through a high numerical aperture objective. 40. try its best to gather and create good sentences. 41. Single Phase Center Multiple Beams(SPCMB) technique is one of solutions to implement high resolution wide swath spaceborne synthetic aperture radar systems. 42. According to elastic shell theory, the paper presents several theoretical models of large aperture optical cell. 43. Methods The distraction system of mid-facial skeleton consisted of a face-bow, the elastic loops and a device that hitched to bone holes made in the aperture rim. 44. The aperture size (area of the aperture) of a lens could be calculated from focal length and the correspondent f-number. 45. As an example of applications, numerical calculation is performed to calculate the losses of Bessel-Gaussian beams propagating through a circular aperture. 46. When viewing extended objects, the apparent brightness seen in the eyepiece is a function only of aperture and magnification, it is not related to focal ratio. 47. In bandwidth maximum value correspondence incidence angle foundation, when reducing incident angle, the transmittance spectrum move to long-wave band and appear hollow aperture. 48. Because raw materials production and capacity the link exist safe hidden danger, the civic architecture concentrate of plus, set off the aperture clear lamp to kindle fire hazard very easily. 49. In this paper, DOA is estimated with non-uniform linear antenna array (NULA) instead of ULA(), so as to achieve a much larger aperture with the same amount of antenna elements. 50. The air gap capacitance sensors with distinct composition have been developed for reducing aperture effect. 51. The effect of quantification noise, saturation noise and bit error noise of synthetic aperture radar(SAR)raw data on the signal to noise ratio of distributed targets is analyzed. 52. The relation between numerical aperture and the passing power rate of semiconductor laser in collimating system has been studied through the parameter equations of fundamental mode Gaussian beam. 53. A bottom detection method used in the multibeam bathymeter sonar is introduced. The method is based on the separate aperture method, which is associated with phase information. 54. To obtain rapidness in batch measuring of aperture, a system of electronic plug gauge, based on RIM-FODS, was put forward. 55. The characteristics and design methods of WFOV and large relative aperture underwater photography objective under weak illumination are introduced. 56. In this paper, distribution functions of light intensity for single slit, many slits (plane gratings) and circular aperture are derived from vector model of vibration. 57. Azimuth resolution of meter wave radar can be improved by using super resolution spectrum estimation methods without extending the antenna aperture. 58. Using Huygens equivalent principle, calculate the relationship between any shade of electric strength and exciting out of ultra-wide TEM antennas aperture radiation field. 59. The essence of the fact that wideband signal can not be effectively transmitted using narrowband phased array in scenarios with large aperture and scan angle is given. 60. Due to the restriction of aperture effect and the aperture delay, it is difficult for a conventional phased array radar to get wide instantaneous band width under wide scan scope. 61. Effective relative aperture of the lens aperture (beam diameter) and the ratio of focal length. 62. Synthetic Aperture Radar (SAR) gains a high-resolution radar image by compressing the Doppler echo in azimuth direction and the linear frequency modulation (LFM) signal in range direction. 63. In addition, it is certificated that the passive synthetic aperture sonar array can realize effectively long distant source localization by normal-mode filtering method. 64. Some characters indicate that the pollen aperture of genus Osmanthus is on the transitional stage from simple to compound apertures in Oleaceae. 65. Thermal Transfiguration Analysis for the Large Aperture Optical Element of Switchyard in ICF Driver Target Area. 66. There were some normal nasal structures which were susceptible to be confused with fracture, such as bone suture, internasal aperture, intersuture bone, and normal variations. 67. Approximately, we assume their tracks are parallel lines in a synthetic aperture time. 68. The echo signal simulation is very important to the study of the SAR system and the imaging methods are the foundation of the technology of Synthetic Aperture Radar (SAR) simulation. 69. Based on the OTF, relations between the effective diameter of three aperture system and pupil parameters including the diameter of sub-apertures and spacing parameter are analyzed. 70. By this way we can design high diffraction efficiency, as well as lager numerical aperture diffractive lens under current machine fabrication condition. 70. 71. Coupling efficiency can be maximized by optimizing the relative aperture of coupling lens. 72. This provides theoretical basis for reasonably selecting aperture of optical transmitting antenna. 73. In this paper, the radar equation of Synthetic Aperture Radar(SAR) in electronic interference or jamming environment is presented. 74. We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio (EMR) and to achieve smaller size of focus point and reasonable focus depth. 75. Aperture the well-set sex that cooperates to be able to affect ambry casing with precision. 76. The radiation fields and the design of coaxial biconical antenna are obtained with the field of equivalent Huggens source on the spherical surface aperture. 77. Motion picture Program mode that lets you change the aperture and the shutter speed for more creative HD movie recording. 78. The diffraction phenomena by a circular aperture or a phase plate is analyzed by the boundary diffraction wave theory, the analytic expression of its axial intensity is obtained. 79. Increasing the porosity and aperture of diffusion layers can increase the limiting current density of fuel cells. 80. From the Helmholtz equation, the optical field analytical expression of an ultrashort pulse propagating through a small aperture lens was acquired with chromatic and spherical aberration. 81. The experimental results show that acoustic resistance of perforated plate is related to plate thickness, aperture diameter, numbers of aperture, acoustic frequency and airflow velocity. 82. Put the camera in aperture priority mode and go for the largest aperture you have: probably f/3.5. Frame a tight shot and take the picture. 83. A 3-D dynamic displacement field is studied and tested by use of two sets of rotation aperture spackle photographic system. 84. The two shortcut modes are aperture priority mode ("A" or "Av"), and shutter priority mode ("S" or "Tv"—literally "time value"). 85. The circular aperture antenna which is an open-ended circular waveguide stimulated by TE11 mode is analyzed. 86. Some parameters, such as the diffraction aperture, the diffraction distance and phase levels of Kinoform, are discussed. They are key factors to the variable focal-length phase Fresnel lens. 87. So that incomplete image comes up but it can be solved by making thicker and wider lines at a loss of aperture ratio. 88. A good performance SAW convolver was designed using small aperture transducer and multi tapped waveguide. 89. Objective lens of beam expander with a high-order curved surface can correct aberration for a deep relative aperture lens. 90. The aperture restrictor is an important component in the hydrostatic support system. 91. Goode said that the images were achieved with the 1.6 m clear aperture, off-axis New Solar Telescope (NST) at BBSO. 92. The paper discussed the measurement for wavefront of large aperture optical system with synthesizing wavefront method. 93. Aperture: Be the diameter pointing to the tiny silica gel inside hole. 94. Uncertainties and complexities exist in the jamming effectiveness evaluation of synthetic aperture radar ( SAR ) . 95. Synthetic aperture imaging is usually used to improve azimuth resolution. 96. This is achieved by a high numerical aperture (NA) lens axicon that utilizes spherical aberration to duplicate the performance of an axicon and to create an extended focal line. 97. The facial aperture that a lot of ladies are full of to glossy has never-failing trouble, do not know how to protect skin, somebody uses oil absorption of oil absorption paper often simply. 98. However, the horn size was very long, if cut down the size of antenna horn directly, it should increase the phase error at the aperture because of large flare angle which caused gain decrease. 99. In high numerical aperture and low technic factor lithography process, degradation of the image quality because of the coma aberration in the projection lens has become a serious problem. 100. From Huygens -Fresnel principle,[sentence dictionary] formulas are derived for determing the distribution of the field and intensity on axis when focused Gaussian beam is diffracted at a circular aperture. 101. After bill board in the store aperture of door sets alight, the wildfire quick Cuan goes into household's in home of second floor, moment the second floor became tranche fire sea. 102. It is a key step of manufacturing the large relative aperture aspherical surface to make a breakthrough at the technology. 103. According to the principle of the circular aperture diffraction, the cell viability, size of cell and the other parameters of cell can be detected by the method. 104. After door window is installed, appear directly tall the aperture of low, fan and casing is inhomogenous phenomenon, exist sometimes on wide below narrow or below wide on narrow issue. 105. In the internal capsule, the distribution of microvascular has the same direction with the nerve fibre, and the diameter of the microvascular is wider, the aperture of meshes is larger. 106. In this paper, an E—plane sectoral horn with amplitude taper and phase correction in the aperture is presented. 107. In well preserved grains the aperture is covered by an operculum or operculum-like component. 108. But head coach also borrows this aperture toto take office fully commander in chief. 109. Migration though resolution cell ( MTRC ) of scatters often occurs in inverse synthetic aperture radar ( ISAR ) imaging. 110. We considered intensity distribution of light focused by a high numerical aperture lens without spherical aberration through a planar interface between materials of mismatch refractive index. 111. The characteristics of the system are both large linear field of view and large relative aperture. 112. Displaced phase center algorithm is an effective motion compensation method when the motion error along the synthetic aperture is small. 113. The optical aberration difference between the biconvex Fresenl lens and the plane-convex Fresenl lens was investigated by designing a large aperture Fresenl lens. 114. The data compression technique is an essential one of Synthetic Aperture Radar ( SAR ). 115. It mainly includes ADC noise analysis, ADC false response, affection of aperture jitter to the system and so on. 116. The optimal IDT aperture and the aperture ratio are determined by calculating diffraction response. 117. The parameters of triple Fabry-Perot etalon, namely, free spectral range, spectral width, peak offsets between each etalon, effective aperture and so on are optimized. 118. An effective algorithm of feature extraction for spotlight synthetic aperture radar images is presented. 119. The results indicated that the width of main beam of vector-hydrophone was narrower than that of pressure hydrophone array at the same aperture. 120. Development of piezoelectric AE sensors and their calibration are presented. The problems of aperture effect and its influence on design, performance and calibration of AE sensors are discussed. 121. Because the telephone booking subscribes terms most lengthways for 10 days, the telephone booking has the initiative aperture of window advance sale and spared the passenger lines up of sorrow. 122. The methodic design of the IR imaging system with large aperture. 123. Because concave and convex chamfer is occlusive not close together, the meeting after the floor uses period of time causes degum, aperture appears on the floor. 124. It is always a challenge of not able to get a good aperture ratio as the resolution density increases. 125. Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward. 126. Hence the value of high numerical aperture for such specimens. 127. The main parameters that effect horizontal resolution of migration imaging were identified as medium velocity, dominant frequency of seismic wavelet and aperture angle of migration processing. 128. Speckle noise is an intrinsic property of Synthetic Aperture Radar (SAR) imagery. 129. Since aperture is the main event in aperture priority mode, you may not need to press the aperture button; simply rotate the command dial and look for the changing numbers in the LCD status screen. 130. Drainage occurs dynamically along the lateral aspect of the nose, cephalad to the lateral crus,[] toward the piriform aperture and parotid lymph nodes. 131. Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate so that the long-time coherent integration can be obtained. 132. However, the instantaneous bandwidth of signals is restricted for general phased array because of its transition time and aperture effect. 133. For large aperture lens, scanning method was developed to measure the focal length in different locations within the mirror. 134. The clear aperture of a telescope is the diameter of the objective lens or primary mirror specified in either inches or millimeters (mm). 135. The simple formulae of fast calculating aperture antenna directivity and gain are derived using antenna beamwidths. Applied range of these formulae are analyzed and discussed. 136. The radar, called synthetic aperture radar or SAR, is meant to complement a global satellite system that listens for electronic emergency beacons sent by wrecked planes or people in distress. 137. A data processing method for mode field diameter (MFD) measurement by means of continuous variable aperture far field (CVAFF) is introduced. 138. Many formulae used to calculate fixed phase distribution for the array lens(), configuration curve of the dielectric lens and aperture phase of a feed phased array are derived. 139. While AlAs oxide confined aperture may reduce the threshold current of vertical-cavity surface emitting lasers (VCSELs), it might also enlarge the series resistance of the VCSELs. 140. So the penumbral (circle-coded aperture) ima9ing microscope (PIM) which is mainly discussed in this paper is developing very quickly . 141. In the F-35 cockpit, the helmet-mounted display, combined with the aircraft's distributed aperture system, or DAS, alleviates the need for night vision goggles. 142. Synthetic aperture technology is introduced to microwave radiometer in order to improve the space resolution. 143. An efficient parallel algorithm for synthetic aperture radar(SAR) imaging is presented in this paper. 144. This paper discusses an approach to design coded aperture and computer reconstruction method of coded image. 145. In optimized design, damped least squares method and adaptive procedure are used to get higher relative aperture, lower distortion and appropriate MTF, and so on. 146. The main influential factors include:The first impression, aperture effection, preconceptional impression, the projecting effection etc. 147. PBT melt blown nonwoven leukocyte filter material depending on its resistance to corrosion, low fineness, small aperture and littery structure is widely used in blood filtration. 148. Thermal imaging systems based on uncooled focal plane array detectors require their optical lens with a large relative aperture. 149. A method for calculating near region power density circular aperture earth station antennas is described briefly. 150. A more integrated theory of design and analysis has been established for the sake of developing the condensing lens type large aperture Frensnel lens. 151. It is proved that a small circular aperture has the positive and minus focal distances, and the research experiments for small aperture glasses are introduced concisely. 152. The unusual sighting of the horizontal rainbow was captured by Ukranian snapper Anton Jankovoy - using a camera set up with a large aperture to 'soak up' as much light as possible. 153. Based on the accurate expression of light intensity at transverse plane, the propagation characteristics of monochromatic planar wave diffracted by small circular aperture are analyzed in this paper. 154. A radar antenna is an antenna of multiband composite coaperture reflecting surface, being of big aperture size, high manufacturing precision and good compatibility with the feed source. 155. To isolate the retroreflections from the - oscillation in multipass amplifier system, the large - aperture electro - optical switch is required. 156. The height of the aperture and the full height, were also harmonically designed. 157. Glass cotton seams of should as far as possible, avoid to produce close aperture, tape will all juncture stickup and firm. 158. Aperture Priority Auto Mode and properly set shutter speed indicator lit. 159. From the propagation theory of partially coherent light, spectral anomalies and spectral switches of Gaussian Schell-model beams focused by an astigmatic aperture lens are studied. 160. The incidence angle must be smaller than the aperture of AOTF. 161. Through advanced electronic light control (ELC) function,[] you can use in indoor applications fixed aperture lens. 162. The aperture may curtain off the light beams that deviate paraxial, the object clarity, which has the immediate have an effect on the accuracy, brightness and the depth of field and so on. 163. After analyzed, the exciting laser intensity, the coverage rate and the numerical aperture of objectives are selected for experimental research. 164. Towards a relative aperture of their shape, head Jan tail, eyes. 165. The article studies the integrated regulated power supply of MPM to satisfy the requirement for transmitter of certain unmanned synthetic aperture airborne radar. 166. We discuss the theory and real time realization of the digital pulse compression of the synthetic aperture radar (SAR). 167. Lastly, the best receiving aperture of a laser heterodyne receiver is discussed briefly. 168. The effects of system parameters, such as numerical aperture and diameter of laser on the control parameter are also discussed. 169. The high aperture ratio is achieved by overlapping ITO pixel electrode and bus line using a photo_sensitive polymer. 170. At first, the small aperture radar is calibrated in the field experiment using a single dihedral. 171. The impacts of receivers rectangular frequency response imperfections on the complex correlation measurement of 2D aperture synthesis microwave radiometer were presented. 172. The effect of integral time on aperture function in linear detector push-broom imaging system is analyzed. 173. Thales Alenia Space has supplied the Sensor Electronic units forming the core of the Synthetic Aperture Radar (SAR)(), set to provide high-resolution radar imagery to the German defence forces. 174. Additionally, the accessory cartilages connect each lateral crus to the piriform aperture. 175. According to the results discussed above , an ideal dielectric filter can be acquired by changing the coupling aperture diameter. 176. A low-cost antenna pointing control system of the mobile very small aperture terminal (MVSAT) is designed and implemented to solve the hasty demanding for mobile satellite communication systems. 177. The quadratic aperture of the cat's - eye diaphragm is imaged too large. 178. The results indicate that the shape and aperture distributing variability of processed pumice granule. 179. The camera has a 32mm lens with a maximum aperture of f/4.5 and a fixed shutter speed of 1/100sec. 180. Next the electromagnetic field on aperture was found, and then proceeded to sum up five common features of aperture field of parabolic antenna. 181. E - light aperture center to inside of test box. 182. It has lots of advantages as compared with optical system, such as lightweight, small size, high resolution, big numerical aperture, good transmission, etc. 183. This paper presents migration through resolution cell (MTRC) of high resolution inverse synthetic aperture radar (ISAR) rotation platform imaging. 184. This paper deals with an investigation of intensity distribution of the partially coherent Bessel beams focused by an aperture lens. 185. However, differences exist in pollen size, aperture, extine thickness and ornamentation. 186. Objective:To get anatomical parameters of pyriform aperture area and to investigate its clinical significance./aperture.html 187. The method for analyzing the spatial resolution of confocal microscope is introduced. The importance of numerical aperture (NA ) is pointed out. 188. A passive synthetic aperture based on phase correction algorithm for solving the port-starboard discrimination problem in the non-aligned towed twin-line array sonar is described. 189. When you use a small aperture (large number aperture setting) with a lens such as a zoom lens, half of the split image becomes dark. In this case, use the matte screen to focus. 190. The propagation property in the far field of the Guassian beam through an aperture is studied in detail by simulation method according the Fresnel-Kirchhoff formula. |
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