aperture diaphragmaperture irisobjective aperture孔径: aperture; diameter of apertu ...光圈: iris diaphragm; iris apertur ...大孔径光束: high-aperture beam孔径光栏: aperture diaphragm; aperture stop孔径光阑: aperture diaphragm; aperture plate; aperture stop; aperture-stop; apertures stop下载手机词典可随时随地查词查翻译