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Жёсткая вода
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Hard water, английский
- Natural water containing impurities in various proportions. traditional hardness is a measure of calcium, minerals or dissolved solids in a solution, measured in parts per million. hard water generally ranges from 100 to 250 ppm.
- Natural waters contain impurities in various proportions; traditionally hardness is a measure of calcium or dissolved solids in a solution. below is a list of the types of hardness and their referenced parts per million range.
- Жесткая вода
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Жёсткий, русский
Жесткая бетонная смесь, русский
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