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overlying rock |
覆岩层 : 43 phrases in 10 subjects |
Bridge construction | 1 |
Desert science | 3 |
Drilling | 5 |
Electronics | 1 |
Engineering geology | 7 |
Explosives and Explosive Ordnance Disposal | 3 |
Geology | 2 |
Hydroelectric power stations | 1 |
Oil / petroleum | 6 |
Technology | 14 |