信息传输装置将控制信号从开关装置或者脚动开关传送到仪器或仪器组中。
Information transfer devices transfer control signals from the switching devices or foot actuated devices to the devices or groups of devices.
本电子教室系统的主要功能包括屏幕监看、广播传送、远程控制、讨论区、文件传输、电子白板等。
The main functions of the E-classroom include monitoring broadcasting long-distance controllings discussing area file-transferring whiteboard, etc.
系统是双向的多路传输系统，既要向接收端传输视频信号，又要向摄像机传送控制信号和电源。
System is two-way much way transmission system, should to receive the signal of videos from the end transmit, and also convey control signal and power to the camera.
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