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集层 : 46 phrases in 10 subjects |
| Drilling | 1 |
| Education | 1 |
| Electronics | 1 |
| General | 27 |
| Geology | 5 |
| Law | 2 |
| Microelectronics | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Technology | 4 |
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