counter tube lifting unit 计数管提升装置
vacuum lifting unit 真空升举装置
underbalanced lifting unit 负压举升装置
Main unit lifting height 主机举升高度
lifting efficiency of pumping unit 抽油装置提升效率
An air cushion disc is adopted as a walking mechanism of a mobile car lifting unit.
采用气垫盘作为移动架车单元的行走机构。
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模块上移
模块下移
不移动