Using tap water as working fluid.

使用自来水但工作液。

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In this paper, we propose a definition of close-natural working fluid.

本文提出近自然工质的定义。

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Fluid force working pressure and spring keep it up.

工作压力由液压加压，弹簧保压。

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Fluid force working pressure and spring keep it up.

工作压力由液压加压，弹簧保压。

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