相机快门 meaning in English

camera shutter

The multichannel digital shutter velocity tester is mainly used in measuring the exposure time of a camera curtain shutter
摘要多通道数字化快门速度测试仪主要应用于幕?式相机快门有效曝光时间的测试。
In chapter 2 , 1 briefly introduce the supernova survey system and discoveries of national astronomical observatories , chinese academy of sciences ( naoc ) . in chapter 3 , the new system of 0 . 6m telescope of naoc is presented
第三部分里，讨论了国家天文台新的系统定标问题，并讨论了ccd相机快门效应，平场等对测光的影响。