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| 勘探线 | |||
| 勘探线勘探工程排成的直线。一般按与煤层走向或主要构造线基本垂直的方向布置 | |||
| exploratory line: 13 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 5 |
| Technology | 8 |
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