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| 扣纹: 36 phrases in 9 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Computer numerical control | 1 |
| Construction | 1 |
| Drilling | 13 |
| Electronics | 3 |
| Mechanics | 2 |
| Oil / petroleum | 1 |
| Technology | 13 |
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