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| 光学资料; 光学数据 | |||
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Optical Data : 68 phrases in 13 subjects |
| Aviation | 8 |
| Communications | 2 |
| Computers | 1 |
| Earth sciences | 2 |
| Electronics | 20 |
| Information technology | 3 |
| Materials science | 1 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 11 |
| Technology | 13 |
| Telecommunications | 4 |
| Television | 1 |