power frequency

• 市电频率,工业频率,电源频率

power frequency的用法和样例：

例句

1. The cathode bypass should be "effective" well below the "mains" frequency", which is usually the case anyway.
   阴极旁路电容的截至频率应该远低于市电频率，这点应该在任何情况下都需要注意的。