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| speed of lens | |||
| 透 镜 率: 28 phrases in 8 subjects |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 2 |
| Life sciences | 1 |
| Metallurgy | 1 |
| Remote sensing | 1 |
| Space | 2 |
| Technology | 17 |
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