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管 子套 : 43 phrases in 11 subjects |
| Agriculture | 2 |
| Automobiles | 1 |
| Chemistry | 2 |
| Computer numerical control | 1 |
| Construction | 1 |
| Drilling | 1 |
| Electronics | 4 |
| General | 1 |
| Geophysics | 6 |
| Oil / petroleum | 7 |
| Technology | 17 |
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