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| 滤芯: 68 phrases in 11 subjects |
| Automobiles | 5 |
| Aviation | 1 |
| Chemistry | 1 |
| Electronics | 5 |
| General | 25 |
| Geology | 1 |
| Jet engines | 1 |
| Medical | 2 |
| Nautical | 1 |
| Oil and gas technology | 1 |
| Technology | 25 |
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