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| 撞楔法在不稳定地层或破碎带掘进或修复巷道时,先将带有尖端木板、型钢或钢轨从巷道工作面支架的顶梁和柱的外侧成排打人,而后在其掩护下施工的方法 | |||
| 楔缝 (堵漏法) | |||
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wedging method : 2 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Technology | 1 |
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