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供电电源供电电源 : 40 phrases in 10 subjects |
| Communications | 1 |
| Computers | 1 |
| Electrical engineering | 2 |
| Electronics | 12 |
| General | 11 |
| Measuring instruments | 1 |
| Military | 1 |
| Security systems | 1 |
| Technology | 9 |
| Telecommunications | 1 |
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