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安培 小时 : 18 phrases in 10 subjects |
| Agriculture | 1 |
| Animal husbandry | 1 |
| Drilling | 1 |
| Electric machinery | 1 |
| Electronics | 3 |
| Geophysics | 4 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Technology | 3 |
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