单词：harmonic source
harmonic source的用法和样例：
例句
- Passive Filter is used to suppress the harmonic current of the power system, and it has become a primary method for the arc furnaces.作为一种重要的谐波源，电弧炉严重影响着电力网络和电气设备以及通信和电子设备的安全和经济运行。
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