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随着照相机小型化、自动化的发展，传动系统由过去的手动卷片、倒片，发展为自动卷片、倒片。现以甘光生产的ＰＧ系列全自动相机的传动系统为例进行分析。作为照相机的传动系统，主要是指卷片和倒片系统。卷片系统要求：每次卷片的长度均为３８ｍｍ，卷过的胶片缠绕在卷片筒上
With the miniaturization of cameras and the development of automation, the drive system has been developed from manual winding and rewinding to automatic winding and rewinding. The production line is now Gengguang PG series automatic camera transmission system as an example for analysis. As a camera drive system, mainly refers to the winding and rewinding system. Winding system requirements: the length of each winding are 38mm, the film wrapped around the winding drum