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drilling plan
dril.
钻井计划
el.mach.
钻孔图
expl.
凿岩布置图
;
炮孔布置图
为爆破而在台阶或隧道作业面上拟定的炮孔设计并标明井巷掘进工作面炮孔彼此关系的平面、剖面图。包含自由面在内的爆破炮孔布置几何图,注明了各孔的长度、直径、方向和钻杆的数量
drilling plan:
2 phrases
in 1 subject
Drilling
2
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