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| Иерархия; иерархическая схема | |||
| иерархическая структура | |||
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階 : 24 phrases in 7 subjects |
| Astronomy | 1 |
| Chemistry | 1 |
| Metallurgy | 1 |
| Mining | 4 |
| Optics branch of physics | 2 |
| Socialism | 1 |
| Technology | 14 |
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