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| natural level of water (в реке, водохранилище) | |||
| normal stage | |||
| normal water level | |||
| natural water level | |||
| natural level of water (в реке) | |||
| mean water | |||
| normal water level (в котле) | |||
| full supply level | |||
| full supply line | |||
| нормальный уровень воды: 7 do fraz, 6 tematyki |
| Agrochemia | 1 |
| Budownictwo | 2 |
| Ekologia | 1 |
| Inżynieria mechaniczna | 1 |
| Kolejnictwo | 1 |
| Technika i technologia | 1 |