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| 铁芯发热试验 (test) | |||
| loop heating: 21 phrases in 7 subjects |
| Electric machinery | 2 |
| Electronics | 4 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Refrigeration | 3 |
| Space | 3 |
| Technology | 6 |
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