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Drilling
containing
动作
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all forms
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in specified order only
Chinese
English
一次
动作
stroke
动作
performance
动作
机械
movement
动力作用的
power actuated
液柱对钻屑的
动态压持作用
dynamic hold-down
协同
动作
teamwork
快
动作
snap action
手动操作杆
manual lever
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