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泥饼刷
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泥饼刷
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套管程序
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mud scratcher
泥饼刷
由钢丝和环状本体组成,安装在套管外壁,下套管时,用来刮削井壁泥饼,从而提高水泥环胶结质量的固井工具。
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rural vacant and abandoned land
rural veteran benefit and placement
rural vitalization strategy
rural waste recycle machinery
rural waste treatment and utilization project
rural water management information system
rural water pollution prevention and control project
rural water supply from urban pipe network
Rural Women
Rurik Dynasty
Rurik Ivnev
Rurouni Kenshin
R.U.R.Rossum’s U niversal
RUS
Rusalka
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Ruse
rush
Rushan green tea
Rushan Shi
Rushan Wan
rush family
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rush to Northeast
Ru Shu Ji
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