滤水器 : 111 phrases in 19 subjects |
Agriculture | 2 |
Automobiles | 3 |
Aviation | 2 |
Drilling | 4 |
Earth sciences | 1 |
Ecology | 7 |
Electronics | 14 |
Engineering geology | 2 |
General | 2 |
Hydroelectric power stations | 3 |
Metallurgy | 4 |
Nautical | 5 |
Nuclear and fusion power | 1 |
Oil / petroleum | 2 |
Rail transport | 1 |
Refrigeration | 2 |
Shipbuilding | 3 |
Space | 1 |
Technology | 52 |