片门 meaning in Chinese

film gate

Film 35 mm ; image produced by camera aperture and projected image area , aspect ratio 1 , 33 : 1
35 mm胶片.第6部分:由摄影机片门摄制的影像和影像放
Cinematography - 8 mm film - camera usage - specification for claw - to - gate distance in 8 mm type r spool - loading cinematograph equipment
电影摄影技术. 8mm胶片.摄影机用法. 8mm r型摄影装片机构的抓片爪到片门间距离规范