opening angle开: open; turn on; switch on; be ...度: surmise; estimate角: role; part; character可变开度角遮光器, 可变孔径快门: variable aperture shutter开度: aperture (辐射器)◇开度可调遮光器 variable aperture shutter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:开度角,即可在微信中查询翻译