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★ 掘进方法 |
tunneling methods : 58 phrases in 9 subjects |
Business | 1 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 2 |
Hydroelectric power stations | 3 |
Hydrology | 3 |
Metallurgy | 2 |
Rail transport | 6 |
Road construction | 7 |
Technology | 31 |