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检查井 : 74 phrases in 13 subjects |
Architecture | 2 |
Chemistry | 1 |
Drilling | 1 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 2 |
Engineering geology | 2 |
Geophysics | 1 |
Hydroelectric power stations | 2 |
Mechanic engineering | 1 |
Mining | 1 |
Oil / petroleum | 5 |
Technology | 54 |