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| line scanner; line scan tube | |||
| horizon scanner | |||
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行扫描器 : 23 phrases in 9 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 8 |
| General | 1 |
| Project management | 1 |
| Space | 3 |
| Technology | 5 |
| Telecommunications | 2 |
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