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防护 层 : 106 phrases in 20 subjects |
Architecture | 1 |
Automobiles | 3 |
Aviation | 4 |
Biotechnology | 1 |
Bridge construction | 4 |
Chemistry | 2 |
Construction | 1 |
Electric machinery | 2 |
Electronics | 5 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 7 |
Geology | 1 |
Metallurgy | 6 |
Oil / petroleum | 5 |
Physics | 1 |
Plastics | 5 |
Polymers | 1 |
Space | 14 |
Technology | 41 |