aperture efficiecy光: light; ray孔: hole; opening; aperture效率: productiveness; efficiency; ...孔径效率，光孔效率: aperture efficiecy射孔效率: perforation effectiveness; perforation efficiency下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:光孔效率，即可在微信中查询翻译
