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掏槽爆破
eng.geol. cut blasting
tech. breaking-in shot; breaking shot; snubbing shot; sump shot
掏槽爆破在平硐、平巷掘进，天井上掘和竖井下掘中进行的首茬炮孔爆破，用来为到达掘进深度而提供膨胀空间
expl. cut blasting
掏槽爆破: 28 phrases in 3 subjects
Electronics2
Explosives and Explosive Ordnance Disposal14
Technology12

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