减压 阀: 118 phrases in 18 subjects |
Agriculture | 1 |
Architecture | 2 |
Automobiles | 20 |
Aviation | 6 |
Compressors | 1 |
Drilling | 1 |
Engineering geology | 1 |
Hydroelectric power stations | 14 |
Metallurgy | 2 |
Oil / petroleum | 3 |
Oil processing plants | 1 |
Rail transport | 1 |
Refrigeration | 4 |
Rowing | 1 |
Shipbuilding | 1 |
Space | 3 |
Technology | 52 |
Wind Energy | 4 |