throttled directional valve
... throttle valve stop 节流阀停止器 throttled directional valve 节流换向阀 throttling butterfly valve 蝶形节流阀 ...
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它由定差减压阀，液动换向阀和简式节流阀三部分组成。
It is certainly worse by the pressure reducing valve , hydraulic throttle valve and the short form of three parts.
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节流换向阀是根据阀的操作位置，其流量可以连续变化的换向阀。
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