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电视电影放映机是电视设备中的一个组成部分,它担负着映播各类影片的任务。目前,电视节目中影片的播放仍占一定的比例。由于电视屏幕小,换机信号在屏幕上的出现时间只有
Television cinema projectors are an integral part of the television equipment and carry the task of showing all kinds of video. At present, the filming of television programs still accounts for a certain proportion. Due to the small TV screen, replacement signal appears on the screen only time