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| длина кривой | |||
| длина дуги; дуговая длина | |||
| 弧长: 25 phrases in 10 subjects |
| Antennas and waveguides | 1 |
| Construction | 1 |
| Electronics | 3 |
| General | 12 |
| Ichthyology | 2 |
| Mathematics | 2 |
| Metallurgy | 1 |
| Metrology | 1 |
| Military | 1 |
| Technology | 1 |
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