叶栅汽蚀绕流时所产生的汽穴不仅使流场发生了变化，而且其未知的形状使流场的求解变得十分困难。
A cavitation bubble in a cascade not only changes the flow field of the cascade, but also makes it difficult to calculate the flow field because of its unknown shape.
本文提出的基于载波相移穴CPS -SPWM雪技术的级联型变流器同时具有CPS - SPWM技术与多电平变流技术的优点，因而有广泛的工程应用前景。
A novel cascade multi-level converter with carrier phase-shifted SPWM (CPS-SPWM) technique is proposed in this paper. This converter has good prospect in engineering due to its perfect performance.
因为冰堰湖的突然泄流造成的洪水也有可能形成锅穴。
Kettle can also form as the result of floods caused by the sudden drainage of an ice-dammed lake.
因为冰堰湖的突然泄流造成的洪水也有可能形成锅穴。
Kettle can also form as the result of floods caused by the sudden drainage of an ice-dammed lake.
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