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water hardness
met. 水的硬度
pest.contr. 水硬度
tech. 硬度
water hardness The amount of calcium and magnesium salts dissolved in water
environ. 水的硬度 (钙和镁的盐类在水中的溶解量。)
water hardness: 17 phrases in 9 subjects
Desert science1
Ecology1
Engineering geology2
Nautical1
Oil / petroleum1
Shipbuilding1
Technology7
Textile industry1
Water resources2