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thrust borer
el. 压力钻孔机
eng.geol. 推进钻机; 隧道鑿進機
hydroel.st. 冲击钻机
oil 顶管机
tech. 凿岩机; 凿进机; 冲击钻孔机; 冲击式钎子钻机; 冲击式钎子
thrust borer: 5 phrases in 3 subjects
Earth sciences1
Mechanics1
Technology3