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坑道爆破
eng.geol. undermining blast
tech. heading blast; heading blasting; undermining blasting
坑道爆破采用集中或条形硐室装药，爆破开挖岩土的作业
expl. chamber blasting; hole blasting; heading blasting; coyote blasting
坑道爆破
: 1 phrase in 1 subject
Technology1

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