特殊用法blank vidicon retrace1.消隐光导管回描flyback retrace1.回扫frame retrace1.帖回描horizontal retrace1.水平回描, 行回描line retrace1.行逆程, 行回扫receiver retrace1.(电视)接收机回扫线scan retrace1.回扫, 扫描逆程sweep retrace1.扫描回程vertical retrace1.垂直回描, 帧回描