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

• 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。
• 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。
• Use a small aperture and position the camera carefully
  用小光圈，仔细调整相机位置。
• 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；
• 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。
• 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。
• 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。
• This results in the forward motion of the aperture.
  这一结果在向前运动的光圈。
• 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。
• 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。