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pH

Related topics: Chemistry
pH /piː ˈeɪtʃ/ (also pH value) noun [singular]  
HCa number on a scale of 0 to 14 which shows how acid or alkaline a substance is 酸碱度,ph litmus test
pH of
 soil with a pH of 3.1
酸碱度为3.1的土壤
Origin pH
(1900-2000) German potenz power + H, sign for hydrogen
pH noun
Chinese

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