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单词	pH
释义	pH 1 of 2 noun ˈpē-ˈāch  : a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower numbers indicate increasing acidity and higher numbers increasing alkalinity and on which each unit of change represents a tenfold change in acidity or alkalinity and that is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram equivalents per liter of the solution also : the condition represented by a pH number PH 2 of 2 abbreviation 1 pinch hit 2 public health 3 Purple Heart Example Sentences Recent Examples on the Web Noun Apply Acwell’s toner to balance skin’s pH, reduce pigmentation, and promote a bright, radiant complexion. Kiana Murden, Vogue, 23 Aug. 2022 The National Eczema Association recommends a cleanser without fragrance and with a low pH, which better complements the skin’s natural pH. The best way to find something that meets these parameters? Mara Santilli, SELF, 3 Aug. 2022 The standard normal pH is kept in a tight range of 7.35 to 7.45. Dr. Michael Daignault, USA TODAY, 28 July 2022 The pH is a measure of how acidic or alkaline the water is. Quartz, 19 July 2022 Retailing for just $12, the Tower 28 facial spray is a pH-balancing hypochlorous acid toner that soothes sunburn and supports the skin barrier. Nicol Natale, PEOPLE.com, 26 July 2022 It's specially formulated with a balanced pH of 4.5 to help evenly distribute color. Dori Price, Good Housekeeping, 15 June 2022 Changing pH involves applying either sulfur (to lower it) or lime (to raise it) and is a gradual process. Miri Talabac, Baltimore Sun, 29 June 2022 Our last pick is another two-bar set: Kitsch's Nourishing Bars, formulated with gentle essential oils and pH-balancing natural ingredients that'll get your hair in beautiful shape. Annie Burdick, PEOPLE.com, 29 June 2022 See More Word History Etymology Noun German, from Potenz power + H (symbol for hydrogen) First Known Use Noun 1909, in the meaning defined above Phrases Containing pH pH meter pH meter Kids Definition pH noun ˈpē-ˈāch  : a measure of the acidity or alkalinity of a substance Lemon juice has a pH of about 2.5. Water has a pH of 7. Medical Definition ph 1 of 2 abbreviation 1 pharmacopoeia 2 phosphor 3 phot pH 2 of 2 noun (ˈ)pē-ˈāch  : a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower numbers indicate increasing acidity and higher numbers increasing alkalinity and on which each unit of change represents a tenfold change in acidity or alkalinity and that is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram equivalents per liter of the solution instead of saying that the concentration of hydrogen ion in pure water is 1.00 x 10−7, it is customary to say that the pH of pure water is 7 Linus Pauling also : the condition represented by such a number compare pk
随便看	Phryma Phrymaceae Phrynidae phrynin Phrynosoma phrynosomae phrynosomas phrynosomata phs phthal phthal- phthalamic acid phthalanilic acid phthalate phthalates phthalazine phthalein phthaleins phthalic acid phthalic anhydride phthalide phthalimide phthalin phthalins phthalo-

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