three-phase froth

例句：

1. 1. The three-phase system is crucial for the operation of the power plant.
   三相系统对于电厂的运行至关重要。
2. 2.The engineers were discussing the potential benefits of using three-phase technology in the production process.
   工程师们正在讨论使用三相技术在生产过程中可能带来的潜在好处。
3. 3.The three-phase motor was a significant improvement over its predecessor, offering greater efficiency and reliability.
   三相电机相较于其前身有了显著的提升，提供了更高的效率和可靠性。