total hardness
Alternative form of Abd Allah
(inorganic chemistry) The sum of calcium and magnesium ion concentrations in water, normally expressed in mmol/L
plural of haid
Not pellucid.
嵐の後、河川の水の総硬度(カルシウムイオンとマグネシウムイオンの濃度の合計、通常はmmolで表す)が著しく増加した。
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