Even in this small example, moving to an asynchronous structure starts to have serious effects on the structure of the code.

即使是在这个小示例中，移植到异步结构对代码结构的影响也是十分严重的。

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YS series three-phase asynchronous motor has excellent starting and running performance and is simple in structure, easy to operate and maintain.

YS系列三相异步电动机有优良的启动和运行性能，结构简单，使用和维护方便；

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Asynchronous generator has advantages of simple and stable structure, small and light, few of auxiliaries and convenient maintenance, etc.

异步发电机具有结构简单、牢固、体积小、重量轻、辅助设备少、运行维护方便等优点。

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