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

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