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| 平行空炮眼掏槽 | |||
| 线型掏槽; 直孔掏槽; 平行孔掏槽掏槽的一种形式，主要特点是在开挖面的中央部位，垂直于开挖面钻凿若干空孔，在其周围平行钻凿一些装药的炮孔。爆破时，装药孔指向附近的空孔〈相当于临空面〉进行爆破掏槽 | |||
| 直眼掏槽; 平行钻孔爆裂; 平行掏槽 | |||
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| 平行孔〔空炮眼〕掏槽; 直线掏槽 | |||
| 空眼掏槽 | |||
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burn cut : 7 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 4 |
| Technology | 3 |
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