Finally introduces the design process of the body, focusing on the implementation and importance of the air return, then detail the working principle of the valves by four representative functions.
最后介绍了阀体设计的过程，重点介绍了气复位的实现以及其重要性，并通过四种有代表性的机能详细阐述了阀体与整个阀片的工作原理。
Finally introduces the design process of the body, focusing on the implementation and importance of the air return, then detail the working principle of the valves by four representative functions.
最后介绍了阀体设计的过程，重点介绍了气复位的实现以及其重要性，并通过四种有代表性的机能详细阐述了阀体与整个阀片的工作原理。
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