aperture

英 [ˈæpətʃə(r)]

美 [ˈæpərtʃʊr]

n.  小孔; 缝隙; (尤指摄影机等的光圈)孔径

复数：apertures　

TOEFLGRETEM4TEM8计算机

Collins.1 / BNC.15655 / COCA.12567

牛津词典

noun

• 小孔；缝隙
  a small opening in sth
• （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。

柯林斯词典

• N-COUNT 孔；缝隙；缺口
  Anapertureis a narrow hole or gap.
  1. Through the aperture he could see daylight.
     透过缝隙，他能看见日光。
• N-COUNT （照相机的）光圈，孔径
  In photography, theapertureof 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。

英英释义

noun

• an man-made opening
• a device that controls amount of light admitted
• a natural opening in something

双语例句

• 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。
• 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。
• Use a small aperture and position the camera carefully
  用小光圈，仔细调整相机位置。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。