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单词 pH
释义

pH

From Longman Dictionary of Contemporary EnglishRelated topics: ChemistrypHpH /piː ˈeɪtʃ/ (also pH value) noun [singular]  HCa number on a scale of 0 to 14 which shows how acid or alkaline a substance islitmus testpH of soil with a pH of 3.1Origin pH (1900-2000) German potenz power + H, sign for hydrogen
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更新时间:2025/1/31 6:41:39