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矿物、可溶性 以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译 - 1
Since all forms of potassium alum are soluble in water, when the stone is wet or applied to wet skin, an invisible, fine layer of the mineral is rubbed off the stone and applied to the skins surface. 因为各种状态的钾明矾都能溶于水，当把它弄湿或接触湿皮肤时，会有一层肉眼看不见的细腻矿物层从钾明矾表面脱落，吸附到皮肤表面。 - 2
Abstract: phosphorus is one of the essential mineral elements to plant growth, however, there is fairly less content of soluble phosphorus in soil. 摘要：磷元素植物生长必需的矿质元素之一，而土壤中可溶性磷的含量比较低。 - 3
Phosphorus is one of the essential mineral elements to plant growth, however, there is fairly less content of soluble phosphorus in soil. 磷是植物生长必需的矿质元素之一，而土壤中可溶性磷的含量比较低。
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