| hard water |
water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap
출처: wordnet.princeton.edu/perl/webwn
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| hard water |
Hard water is water that has a high mineral content. This content usually consists of high levels of metal ions, mainly calcium (Ca) and magnesium (Mg) in the form of carbonates, but may include several other metals as well as bicarbonates and sulfates. While it is not generally dangerous to safety or health, it does generally cause potentially costly nuisance problems in the home and in industry. ...
출처: en.wikipedia.org/wiki/Hard_water
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| hard water |
Alkaline water containing dissolved salts that interfere with some industrial processes and prevent soap from sudsing.
출처: www.epa.gov/OCEPAterms/hterms.html
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| hard water |
Hard water that contains a large amount of minerals.
출처: www.peakagents.ca/glossary/h2.htm
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| hard water |
Water with a high concentration of the Ca 2+ , Mg 2+ , and/or Fe 3+ ions.
출처: xenon.che.ilstu.edu/genchemhelphomepage/glossary/h...
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