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to phrases
reverse circulation drill
expl.
反循环钻机
采用泥石泵从孔底将携带岩渣的泥浆吸出的钻孔机械
tech.
反向循环钻机
一种大口径钻机
reverse circulation drill:
9 phrases
in 3 subjects
Engineering geology
2
Hydroelectric power stations
1
Technology
6
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