recording watt and varmeter

例句：

1. 1. The recordingwatt and varmeter isused to measure the power consumption ofelectronic devices.
   记录功率和无功功率表用于测量电子设备的功耗。
2. 2. The engineerused the recording wattand varmeter to monitor theperformance of the power system.
   工程师使用记录功率和无功功率表来监测电力系统的性能。
3. 3. The recording watt and varmeter was crucial in identifying the root causeof the power outage.
   记录功率和无功功率表在确定停电原因中起到了关键作用。