结合试验过程中遇到的问题，给出了改进的直流衰减法测试电路。
Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method.
结合试验过程中遇到的问题，给出了改进的直流衰减法测试电路。
Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method.
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