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| electron beam semiconductor | |||
| electron beam semiconductor (器件) | |||
| 电子束半导体: 14 phrases in 7 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Electronics | 5 |
| General | 2 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 1 |
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