precision ammeter造句

例句与造句

1. Current transformers are widely used for changing the magnitude of ac current . high currents can be stepped down to facilitate measurement by precision ammeters
   使用变流器能把高值电流变为低值电流，以便使用精密电流表进行量测。
2. It's difficult to find precision ammeter in a sentence. 用precision ammeter造句挺难的