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

• What aperture are you using?
  你用多大光圈？
• 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。
• 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；
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。