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| 开式路循环 | |||
| 开式循环 | |||
| 开路循环 | |||
| 直流循环; 开式循环; 开环 | |||
| open cycle: 32 phrases in 13 subjects |
| Automobiles | 2 |
| Ecology | 1 |
| Electric machinery | 2 |
| Electronics | 4 |
| Hydroelectric power stations | 2 |
| Information technology | 1 |
| Mechanics | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Rail transport | 2 |
| Refrigeration | 1 |
| Space | 2 |
| Technology | 12 |
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