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| Unterstollenanlage eines Kavernenkraftwerkes (подземной ГЭС) | |||
| Unteranlage f (подземной ГЭС) | |||
| Unterstollenanlage f | |||
| концевая схема компоновки: 4 phrases in 2 subjects |
| Hydrology | 2 |
| Water supply | 2 |
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