aperture

noun

1. 小孔；缝隙
   a small opening in sth
2. （尤指摄影机等的光圈）孔径
   an opening that allows light to reach a lens , especially in cameras
   1. For flash photography, set the aperture at f.5.6.
      用闪光照相，要把光圈孔径定为5.6。

1. N-COUNT 孔；缝隙；缺口
   An aperture is a narrow hole or gap.
   1. Through the aperture he could see daylight.
      透过缝隙，他能看见日光。
2. N-COUNT （照相机的）光圈，孔径
   In photography, the aperture of a camera is the size of the hole through which light passes to reach the film.
   1. Use a small aperture and position the camera carefully...
      用小光圈，仔细调整相机位置。
   2. The camera has a 32mm lens with a maximum aperture of f/4.5 and a fixed shutter speed of 1/100sec.
      这架相机有一个32毫米的镜头，最大孔径为f/4.5，固定快门速度为1/100秒。

1. Through the aperture he could see daylight.
   透过缝隙，他能看见日光。
2. Use a small aperture and position the camera carefully
   用小光圈，仔细调整相机位置。
3. The only light came through a narrow aperture.
   仅有的光亮来自一个小孔。
4. What aperture are you using?
   你用多大光圈？
5. The quadratic aperture of the cat's-eye diaphragm is imaged too large.
   猫眼光栏的方形光孔成像太大。
6. These ions pass through a slit of variable aperture and then enter the magnetic field analyzer.
   这些离子通过可变宽度的狭缝进入磁场分析器。
7. In synthetic aperture sonar imaging, the residual phase error is mainly corrected via autofocus.
   合成孔径声呐成像中，主要通过自聚焦校正剩余相位误差。
8. Aperture Priority Auto Mode and properly set shutter speed indicator lit.
   光圈优先自动模式和正确设置快门速度指标点燃。
9. The demand of autofocus for high resolution real time synthetic aperture radar ( SAR) is very high.
   高分辨率机载合成孔径雷达实时成像对自聚焦的要求非常高。
10. Multilook processing is a basic method for speckle suppression of synthetic aperture radar ( SAR) images.
    多视处理是合成孔径雷达（SAR）图像纹斑噪声抑制的一种基本方法。
11. The orifice shape and aperture size is one vibration source on aerostatic bearing.
    在空气静压导轨中，节流孔形状和孔径大小是主要振源之一。
12. An algorithm based on null steering techniques is proposed to suppress the range ambiguity of spaceborne synthetic aperture radar.
    给出了基于零点指向技术抑制星载合成孔径雷达距离模糊的算法。
13. The feasibility of making two antennas work with a shared aperture on a platform is investigated.
    该文对载体平台上双天线共口径的可行性进行了研究，口径为带介质罩的深腔。
14. Atmospheric water vapor is a main one of errors effects on repeat-pass Differential Interferometric Synthetic Aperture Radar monitoring deformation.
    大气水汽是影响重复轨道合成孔径雷达干涉测量形变监测的一个主要误差源。
15. The location mechanism of Synthesis Aperture Radar ( SAR) scene matching is introduced.
    介绍了合成孔径雷达景象匹配的定位机理。
16. This issue presents a kind of fully digital array radar& synthetic impulse and aperture radar.
    介绍一种全数字阵列雷达&综合脉冲孔径雷达，雷达采用收发全数字波束形成。
17. This results in the forward motion of the aperture.
    这一结果在向前运动的光圈。
18. A design of two wideband antennas sharing one aperture is proposed.
    给出了一种两宽带天线共用一个口径的设计。
19. Improving texture and preserving edge is the important target of synthetic aperture radar ( SAR) image fusion.
    提高纹理清晰度、保护边缘信息是合成孔径雷达（SAR）图像融合的重要目标。
20. A non-coherent visible three-dimensional imaging method is proposed based on the principle of coded aperture imaging.
    根据编码孔径成像的基本原理，提出了一种非相干可见光三维成像方法。
21. In this paper, aperture synthesis theory is proposed to be used in passive millimeter-wave terminal guidance.
    本文将综合孔径理论应用于被动毫米波末制导技术，并研究了天线阵列的排布方式。
22. At first, the principle of synthetic aperture focusing technique for ultrasonic imaging is introduced in this paper.
    本文首先介绍了合成孔径聚焦超声成像的基本原理。
23. I do not set the aperture right so they are overexposed. yes?
    我没有对好光圈，结果曝光过度了，对吗？
24. Factor which affected the aperture efficiency is analyzed, and then the aperture efficiency using three approaches is optimized;
    分析了影响阵列天线口径效率的因素，通过三种途径优化了口径效率；
25. The influence of airborne SAR antenna aperture on imaging process is analyzed.
    分析了机载合成孔径雷达天线口径对成像处理的影响。
26. Synthetic aperture imaging is usually used to improve azimuth resolution.
    合成孔径成像是一种常用的改善方位分辨率的方法。
27. For a cylindrical fold, the average aperture and fracture permeability related can be estimated.
    对于圆柱状褶皱可以估算与褶皱有关的裂缝孔隙度和渗透率。
28. And then it introduces synthetic aperture radar system model, the original echo of the simulation methods and R-D imaging algorithm.
    然后建立了合成孔径雷达的系统模型，介绍了原始回波的模拟方法和R-D成像算法。
29. Furthermore, the effect of aperture parameters on the diffraction characteristics of laser beams is also discussed.
    另外，讨论了齿形光阑的参数对光束衍射特性的影响。

noun

1. an man-made opening

2. a device that controls amount of light admitted

3. a natural opening in something