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渗 透 油 : 26 phrases in 9 subjects |
| Automobiles | 2 |
| Chemistry | 1 |
| Electric machinery | 1 |
| General | 1 |
| Mining | 1 |
| Nautical | 1 |
| Oil / petroleum | 5 |
| Polygraphy | 1 |
| Technology | 13 |
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