| |||
recirculation system; closed system; recirculating system | |||
recycling system | |||
recycle system |
再循 环 系统 : 39 phrases in 12 subjects |
Automobiles | 8 |
Aviation | 1 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 11 |
General | 2 |
Metallurgy | 1 |
Nautical | 1 |
Refrigeration | 1 |
Space | 1 |
Technology | 10 |
Water resources | 1 |