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| 光学资料; 光学数据 | |||
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| 光学资料; 光学数据 | |||
| optical data: 96 phrases in 12 subjects |
| Aviation | 11 |
| Communications | 2 |
| Computer networks | 2 |
| Computers | 1 |
| Earth sciences | 2 |
| Electronics | 24 |
| Information technology | 6 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 12 |
| Technology | 29 |
| Telecommunications | 5 |
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