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| 炮孔布置台阶顶面的炮孔布置形状或者台阶底部钻孔后的真实情况。也指井筒或巷道工作面炮孔的布置形状，包括抵抗线、间距和相互间的关系 | |||
| 钻孔布置 | |||
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arrangement of holes : 4 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Technology | 1 |
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