drill in

短语词组

短语

• drill -string in compression 钻杆受压
• casing drill -in [矿业]套管送下程序
• impact drill -in 冲击钻进
• prd drill -in fluid prd钻开液
• reverse circulation drill -in 反循环钻进
• drill hole for in -situ leaching 地浸钻孔
• tip -in drill 门前补射练习
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