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撞钻
eng.geol. jumper bar
tech. jack hammer drill; jump drilling; percussion boring; hammer drill
撞〔冲〕钻
coal. jumper bar
construct. jack hammer drill
geol. jumper-boring bar
撞〔索〕钻
construct. jump drilling
撞钻: 22 phrases in 5 subjects
Automobiles10
Exhibitions2
General1
Technology8
Water resources1

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