three phase diagram

例句：

1. 1. The engineer drew a three-phase diagram to illustrate the circuit's operation.
   工程师绘制了一个三相图来说明电路的运行情况。
2. 2.The new power plant uses a three-phase diagram to control its energy output.
   新电厂使用三相图来控制其能源输出。
3. 3.The technician analyzed the data with the help of a three-phase diagram to identify the faulty component.
   技术员在三相图的帮助下分析了数据，以找出故障部件。