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气密 的: 32 phrases in 15 subjects |
Agriculture | 1 |
Automobiles | 4 |
Earth sciences | 1 |
Electric machinery | 2 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 5 |
Hydroelectric power stations | 1 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Pulp and paper industry | 1 |
Space | 2 |
Technology | 6 |
Telecommunications | 1 |
Transport | 1 |