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| 过滤器间: 13 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Ecology | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Rail transport | 2 |
| Refrigeration | 1 |
| Technology | 2 |
| Telecommunications | 1 |
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