密封 性 : 133 phrases in 28 subjects |
Agriculture | 1 |
Automobiles | 12 |
Aviation | 4 |
Business | 1 |
Chemistry | 6 |
Compressors | 1 |
Continuous casting | 1 |
Drilling | 2 |
Earth sciences | 1 |
Ecology | 1 |
Economy | 1 |
Electric machinery | 5 |
Electronics | 8 |
Explosives and Explosive Ordnance Disposal | 1 |
Footwear | 1 |
Hydroelectric power stations | 2 |
Mechanics | 3 |
Metallurgy | 5 |
Mining | 1 |
Nautical | 4 |
Oil / petroleum | 9 |
Oil processing plants | 1 |
Rail transport | 2 |
Space | 8 |
Technology | 49 |
Telecommunications | 1 |
Textile industry | 1 |
Wind Energy | 1 |