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| monochromatic wave | |||
| single-color wave; single-colour wave | |||
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单色波 : 11 phrases in 7 subjects |
| Air defense | 2 |
| Chemistry | 1 |
| Earth sciences | 1 |
| General | 1 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 3 |
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