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air ring; cooling ring |
空冷环 : 48 phrases in 12 subjects |
Animal husbandry | 1 |
Architecture | 2 |
Aviation | 16 |
Chemistry | 1 |
Electric machinery | 5 |
Electronics | 2 |
Hydroelectric power stations | 1 |
Plastics | 2 |
Refrigeration | 6 |
Space | 2 |
Technology | 8 |
Wind Energy | 2 |