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| 合成机油; 合成润滑，机油 | |||
| 人造石油 | |||
| 合成油 | |||
| 合成原油; 合成石油 | |||
| synthetic oil: 40 phrases in 15 subjects |
| Automobiles | 6 |
| Aviation | 1 |
| Chemistry | 2 |
| Company name | 1 |
| Compressors | 2 |
| Drilling | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| General | 2 |
| Oil / petroleum | 4 |
| Oil processing plants | 4 |
| Perfume | 4 |
| Polygraphy | 1 |
| Polymers | 1 |
| Technology | 9 |
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