Weak acid formula without alcohol and PH value that balances skin weak acid, it is suitable for any types of skin.
不添加酒精的弱酸性配方，平衡肌肤弱酸性的ph值，适合任何肤质。
Titration error formula and feasibility judgment in stepwise titration of strong and weak acid mixture.
本文从一元强酸与弱酸滴定的误差公式判断用强酸进行分步滴定的可能性。
Ou Wei with exclusive development of PH5.5 weak acid safety formula, becoming the world's beauty and skin care recognition and recommend the skin care brand.
欧唯慕凭借独家研制PH 5.5弱酸性安全配方，成为全球美容肌肤修护认可及推荐的护肤品牌。
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