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to phrases
bottom hole
compr.
底口
dril.
井底
;
底部井段
eng.geol.
孔底
expl.
底板水平炮孔
沿巷道及开挖面底板钻凿的水平炮孔,俗称抬炮。由于在其抵抗线方向上堆积着上一段炮孔爆落的岩块而增加了底板水平炮孔的负荷,所以在设计时,其孔距应小于其他炮孔的间距,并适当增加炸药量
;
底部炮孔
tech.
底孔
bottom-hole
:
311 phrases
in 12 subjects
Bridge construction
1
Drilling
88
Earth sciences
8
Engineering geology
2
Explosives and Explosive Ordnance Disposal
4
General
1
Geophysics
10
Hydroelectric power stations
1
Mining
45
Oil / petroleum
92
Technology
58
Thermal Energy
1
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