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| 电气贯穿件 | |||
| 电气贯穿 | |||
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| 电气贯穿 | |||
| electrical penetration: 11 phrases in 5 subjects |
| Electric machinery | 1 |
| Electronics | 1 |
| Nautical | 1 |
| Nuclear physics | 1 |
| Technology | 7 |
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