When the pump is normal work, but through the valve and pump water loop truncate the channel impeller, and put off the liquid water ring round.

当泵正常工作后，可通过阀截断水环轮和水泵叶轮的通道，并且放掉水环轮内的液体。

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Assembly can be understanded as the necessary simplification of machine accessory, the wiping off of foundry round corner, craftwork structure, etc, which is the geometrical work.

组合体可以理解为机器零件进行了必要的简化，去除了铸造圆角、技摸斜度以及工艺结构，是“几何化”了的机件。

youdao

Assembly can be understanded as the necessary simplification of machine accessory, the wiping off of foundry round corner, craftwork structure, etc, which is the geometrical work.

组合体可以理解为机器零件进行了必要的简化，去除了铸造圆角、技摸斜度以及工艺结构，是“几何化”了的机件。

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