单向 阀: 136 phrases in 19 subjects |
Architecture | 2 |
Automobiles | 33 |
Aviation | 11 |
Business | 2 |
Compressors | 5 |
Construction | 1 |
Drilling | 5 |
Ecology | 2 |
Electronics | 1 |
Engineering geology | 2 |
Hydroelectric power stations | 2 |
Mechanics | 3 |
Metallurgy | 3 |
Nautical | 1 |
Oil / petroleum | 9 |
Shipbuilding | 1 |
Space | 2 |
Technology | 49 |
Wind Energy | 2 |