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深孔爆破
eng.geol.	deep blasting; deep hole blasting; long hole blasting
hydroel.st.	deep-hole blasting
tech.	muffling
深孔爆破炮孔深度较大的钻孔爆破。一般孔深大于5m,孔径大于50long75 mm 的爆破，称为深孔爆破。主要用于采矿、筑路和开挖坝基等爆破工程
expl.	long-hole type blasting; long-hole blasting; deep-hole blasting; long-hole blasts

深孔 爆 破: 27 phrases in 3 subjects

Architecture	1
Explosives and Explosive Ordnance Disposal	24
Technology	2