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| 脉冲发生器 | |||
| 产生门 | |||
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generator gate : 28 phrases in 9 subjects |
| Air defense | 8 |
| Astronautics | 1 |
| Aviation | 1 |
| Construction | 1 |
| Earth sciences | 2 |
| Electronics | 4 |
| Metallurgy | 4 |
| Space | 1 |
| Technology | 6 |
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