The control scheme and operating principle of a double closed-loop AC/DC power converter system are discussed by using physics.

从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。

Those circuits are different in operating principle.

那些电路的工作原理各不相同。

The types and operating principle of heat exchangers are explained.

阐述了换热器的类型及工作原理。

This is not only a UTC operating principle, the company's foothold.

这不仅是UTC的经营原则，也是公司的立足之本。

Today's operating principle is: ‘What's in it for me? ’ People need hope.

今天这里通用的原则就是‘这里面有我什么事儿吗’人们需要希望。