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螺杆螺纹 : 88 phrases in 14 subjects |
| Architecture | 1 |
| Automobiles | 7 |
| Chemistry | 1 |
| Computer numerical control | 1 |
| Drilling | 4 |
| Electronics | 1 |
| General | 2 |
| Mechanic engineering | 1 |
| Nautical | 1 |
| Oil / petroleum | 13 |
| Plastics | 26 |
| Polymers | 1 |
| Space | 1 |
| Technology | 28 |
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