内置功率放大电路，可以单独成为一个小系统，并受主信号强切优先控制。
Built-in power amplifier circuits that can be a small system, and strong signal by cutting the main priority control.
具有工科背景，有数字电路基础知识者优先；
With engineering background, have some basic knowledge of digital circuit;
具有工科背景，有数字电路基础知识者优先；
With engineering background, have some basic knowledge of digital circuit;
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