螺杆式启闭机 screw hoist ; worm-type open-close machine ; QLSD ; screwho
卷扬式启闭机 winch hoist ; QPQ ; win ; winc
上掀启闭式头灯 retractable headlight
双螺杆式启闭机 double-screw open and close machine
台车式启闭机 platform hoist
桥式启闭机 portal crane
式启闭机 QPT
液压式启闭机 hydraulic hoist
推拉杆式启闭机 operating machine with rigid connecting rod
由于这种止回阀能够在重力和介质倒流撞击启闭件之前关闭阀门，因此这种直通弹簧驱动升降式止回阀也称为“静音”止回阀。
The in-line spring-actuated lift check also is referred to as the "silent check" because the spring closes the valve before gravity and fluid reversal can slam the valve closed.
沙溪口表孔弧门是我国第一个采用斜拉式双缸液压启闭机操作的水电站。
Shaxikou Spillway Segment Gate is the first hydraulic Power Station controlled by skew axis double drum hydraulic hoist in our country.
采用薄膜式气缸替代活塞式气缸，排除了活塞环易损漏而导致无法启闭阀门的弊端。
Adopt film cylinder in place of piston cylinder, which remove the abuse that piston ring is easily damaged and lead to not open or close valve.
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