Hydraulic automatic system is a kind of enlarge mechanism, it is also an auto-regulator system.

液压随动系统是一种放大机构，也是一种自动调节系统。

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Hydraulic automatic system is a kind of enlarge mechanism, it is also an auto-regulator system.

液压随动系统是一种放大机构，也是一种自动调节系统。

youdao