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| digital analog system | |||
| digital simulator system | |||
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数 字模拟系统 : 36 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 6 |
| Earth sciences | 5 |
| Electronics | 6 |
| Engineering geology | 1 |
| General | 2 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 8 |
| Telecommunications | 2 |
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