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| optical wavelength meter | |||
| optic wavelength meter | |||
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光波长计 : 17 phrases in 8 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Electronics | 4 |
| Geophysics | 1 |
| Physics | 1 |
| Space | 1 |
| Technology | 7 |
| Water resources | 1 |
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