1. An apparatus for taking photographs, generally consisting of a lightproof enclosure having an aperture with a shuttered lens through which the image of an object is focused and recorded on a photosensitive film or plate. 
   照相机一种用于拍摄照片的器械，一般由一遮光室组成，该遮光室带有一有层叠透镜的光圈，物体的影象通过它聚焦并被记录在一感光底片或感光板上
2. fundamental theory of aperture antenna 
   面天线基本理论
3. A breach or an aperture. 
   缺口，孔
4. The aperture of a camera. 
   照相机的光圈
5. What aperture are you using? 
   你使用多大的光圈？

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• 1. 光圈挡片
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• 2. 片窗板
  aperture plane 孔径面[ 孔径光阑所在的平面。(IDB)]...aperture plate 片窗板
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