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重 润 滑 : 49 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 13 |
| Business | 1 |
| Electric machinery | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Nautical | 2 |
| Oil / petroleum | 9 |
| Space | 1 |
| Technology | 17 |
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