elevating screw
... elevating scraper 升降式铲运机 elevating screw 升降螺丝 elevating stripper 提升卸卷机 ...
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... up and down fall 舱口吊货索 up and down screw 升降螺丝 up and down spoke 舵轮上的把柄 ...
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在安装前应注意各部的螺丝受力是否平衡、升降(活动)是否灵活。
Departments should pay attention to before installing the screw force is balanced, lifting (activity) it is flexible.
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