英语词汇“calcium hardness”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	calcium hardness
释义	calcium hardness calcium hardness [′kal·sē·əm ‚härd·nəs] (chemistry) Presence of calcium ions in water, from dissolved carbonates and bicarbonates; treated in boiler water by introducing sodium phosphate.
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