hand powered lift
... hand operated door 手动门 hand powered lift 手动提升机 hand pump 手压泵 ...
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手动操作杆式提升机 Manually Lever Operated Hoists
·2,447,543篇论文数据，部分数据来源于NoteExpress
本实用新型提供了一种提升机，改手动加料为电动加料，节省了人工。
The utility model provides a hoisting machine, which changes manual feeding into electric feeding and saves manpower.
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