名词 aperture:

1. a device that controls amount of light admitted

2. a natural opening in something

3. an man-made opening; usually small

aperturen.孔；孔径；光圈；缝隙aperture image孔径像aperture grill孔径栅,荫栅,障栅apertured disk穿孔圆盘aperture sight孔径瞄准具,孔径瞄准器aperture mixer孔径混合器aperture ratio孔径比,口径比,镜头直径与焦距之比,孔率aperture color孔隙色aperture error孔径误差aperture label孔径标志aperture radar孔径雷达