WordNet
water softener
名詞
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水の硬度を下げてもっと十分に石鹸の泡が立つようにする物質
a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power.
水の硬度を下げてもっと十分に石鹸の泡が立つようにする物質。