1)shutter opening angle,快门开口角2)shutter opening angle,快门开角3)fast-open shutter,快开快门4)Quickly, open the door !,快,开开门!5)shutter release,快门开关6)quick opening valve,快开阀门
用法例句
With the destination of making a extra best quality microsecond pulse shutter,the shutter system consisted of fast-open shutter and expl.