Click , can switch over the track direction , and then control train course 点击<浅绿色轨道切换器> ,可切换轨道方向,进而控制火车行进路线。
Technical requirements and measure methods on converter of audioand video signal for tv broadcast receiver 电视广播接收机用音频视频信号切换器技术要求和测试方法
This system mainly consists of audio and video matrix switchers , computer matrix switchers and various signal converters 此系统主要由音、视频矩阵切换器、计算机矩阵切换器和各种信号转换器等组成。