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反循环钻进
eng.geol. counter-flush drilling
hydroel.st. reverse circulation drilling
tech. drilling with counterflow
反循环洗井钻进
tech. reverse circulation drilling
反循环洗孔钻进
tech. reverse circulation drilling
反 循环钻进
: 27 phrases in 5 subjects
Bridge construction2
Earth sciences3
Engineering geology4
Explosives and Explosive Ordnance Disposal4
Technology14

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