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燃料标准 : 28 phrases in 13 subjects |
| Automobiles | 5 |
| Chemistry | 1 |
| China | 1 |
| Ecology | 1 |
| Electronics | 4 |
| Energy industry | 1 |
| General | 1 |
| Management | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 6 |
| Oil processing plants | 2 |
| Space | 1 |
| Technology | 3 |
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