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滚针轴承滚针 : 39 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 10 |
| Drilling | 2 |
| Ecology | 3 |
| Electronics | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 15 |
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