多点控制单元(MCU)是视频会议系统中一个非常重要的组成部分，但在目前的系统中一般均采用硬件来实现。
Multipoint Control Unit (MCU) is a key component of videoconferencing system, but it is realized by hardware in the present system.
多点控制单元(MCU)是视频会议系统中一个非常重要的组成部分，但在目前的系统中一般均采用硬件来实现。
Multipoint Control Unit (MCU) is a key component of videoconferencing system, but it is realized by hardware in the present system.
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