该程序主要用二叉树实现在电路中合适的位置，放置信号放大器以防止信号向下一级传输时衰减过大。

该程序主要用二叉树实现在电路中合适的位置，放置信号放大器以防止信号向下一级传输时衰减过大。-The program realization of the main tree in the circuit a suitable location to place the signal amplifiers to prevent signal down a transmission attenuation is too large.