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额定荷载: 38 phrases in 14 subjects |
Automobiles | 11 |
Aviation | 1 |
Business | 1 |
Chemistry | 2 |
Commerce | 1 |
Drilling | 3 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 2 |
Metallurgy | 1 |
Nautical | 2 |
Oil / petroleum | 3 |
Plastics | 1 |
Technology | 8 |
Telecommunications | 1 |