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| spectrum mask | |||
| curve | |||
| spectrum | |||
| spektrum: 71 phrases in 11 subjects |
| Communications | 25 |
| Earth sciences | 6 |
| Electronics | 20 |
| Health care | 1 |
| Information technology | 2 |
| Life sciences | 3 |
| Lighting other than cinema | 1 |
| Mathematics | 5 |
| Natural sciences | 2 |
| Physical sciences | 4 |
| Statistics | 2 |