特殊用法angular aperture1.孔径张角; 天线角开宽; 方向图的宽度annular aperture1.环孔径antenna equivalent aperture1.天线等效孔径atomizer aperture1.喷雾嘴auxiliary finder aperture1.辅助瞄准孔径beam-defining aperture1.限束孔径[小孔]beam-limiting aperture1.限制射束的孔径bomb-bay aperture1.炸弹舱口calendar aperture1.日历窗camera aperture1.摄影机片门; 摄象机孔阑; 取景框camera lens aperture1.摄象机镜头孔阑effective aperture1.有效口[孔]径focal aperture1.聚焦孔径freight loading aperture1.装货舱口full aperture1.全口[孔]径mask aperture1.选拔[掩模]孔隙masking aperture1.蔽光孔multiple apertures1.多重口径optical antenna aperture1.光学天线孔径optical receiver aperture1.光学接收器孔径, 光接收系统孔径optical transmitter aperture1.光发射系统孔径optimum aperture1.最佳孔径photometric aperture1.光度孔径picture aperture1.(电影放映机)图象孔径quantizing aperture1.电视摄象管电子束孔scanning aperture1.扫描孔径sight aperture1.觇孔瞄准具synthesizing aperture1.电视显象管电子束孔transmitter aperture1.发射天线孔径transmitting aperture1.发射孔