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zmiękczanie wody
| wapnem
| sodą
| zmiękczanie wody | |
| construct. | water softening |
| wapno | |
| gen. | quicklime |
| soda | |
| agric. | sodium carbonate |
| |||
| water softening | |||
| zmiękczanie wody: 6 phrases in 4 subjects |
| Chemistry | 1 |
| Construction | 3 |
| Technology | 1 |
| Water supply | 1 |