electric harmonic analyser

例句：

1. 1. The electric harmonic analyzer is used to measure the frequency ofelectrical signals.
   电谐波分析器用于测量电气信号的频率。
2. 2. The engineer used the electricharmonic analyzer to diagnose the problemwith the circuit.
   工程师使用电谐波分析器诊断电路的问题。
3. 3. The electricharmonic analyzer helpedus understand the nature of thenoise in the factory.
   电谐波分析器帮助我们理解工厂中噪声的性质。