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water softening : ウィキペディア英語版 | water softening
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water is more compatible with soap and extends the lifetime of plumbing. Water softening is usually achieved using lime softening or ion-exchange resins. ==Problems with hard water== (詳細はmetal ions like calcium and magnesium principally as bicarbonates, chlorides, and sulfates in water causes a variety of problems.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「water softening」の詳細全文を読む
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