... 闸流管方式：thyratron system 闸阀操纵器：gate valve operator 闸阀;闸门管：GTV ...
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The device by the human operator launches, such as through the cone-shaped gear reducer drive, direct drive valve stem up and down movement of the valve gate.
本装置由人力操作手轮，通过锥形齿轮等减速传动，直接驱动阀门阀杆上下移动，启闭阀门。
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