... Percolation 渗流、渗漏 Percussion boring 冲击式钻孔 Peridotite 橄榄岩 ...
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... percussion bit 冲击钻头 percussion boring 冲击钻探 percussion core 冲击钻井取的岩心 ...
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cable percussion boring 钢绳冲击钻探
Percussion boring machine 冲击式钻土机
percussion type boring machine [机] 冲击式钻机
boring by percussion 冲击钻井 ; 冲击钻进
percussion method of boring 撞击钻探法
percussion hand boring 人力冲击钻
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