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bottom-hole
| flow bean
| bottom hole | |
| compr. | 底口 |
| dril. | 井底; 底部井段 |
| eng.geol. | 孔底 |
| expl. | 底板水平炮孔; 底部炮孔 |
| flow bean | |
| oil | 节流嘴; 自喷油嘴; 阻流器 |
| |||
| 底口 | |||
| 井底; 底部井段 | |||
| 孔底 | |||
| 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 | |||
| 底孔 | |||
| bottom-hole: 311 phrases in 12 subjects |
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