drilled comb pressure ring是什么意思


中文翻译钻孔梳形压力环

网络释义

1)drilled comb pressure ring,钻孔梳形压力环2)annular hole drilling tool,环形孔钻具3)ringlike deephole drilling machine,环形深孔钻机4)borehole pressure recorder,钻孔压力记录仪5)on-off bottom pressure-drop,钻-悬循环压力差6)the pressure of conical ring,锥形环压力

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