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    pH

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    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值 → litmus testpH 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 nounChinese


    pH
    pH /piː ˈeɪtʃ/ (also pˈH ˌvalue) noun [singular]
     Date: 1900-2000
     Language: German
     Origin: potenz __power__ + H, sign for hydrogen
    a number on a scale of 0 to 14 which shows how acid or alkaline a substance is ⇨ litmus test
        pH of
        soil with a pH of 3.1


    pHBrE /ˌpiː ˈeɪtʃ/ 🔊NAmE /ˌpiː ˈeɪtʃ/ 🔊 noun [singular] (chemistry 化学) a measurement of the level of acid or alkali in a solution range of 0 to 14 a reading of below 7 shows an acid and of above 7 shows an or substance. In the pH range of 0 to 14 a reading of below 7 shows an acid and of above 7 shows an alkali. * pH 值（溶液或物质的酸碱度。pH 值介于 0 至 14，7 以下为酸，7 以上为碱）◆a pH of 7.5pH 值 7.5◆to test the pH level of the soil测试土壤的酸碱度

    acid, catalyst, chemistry, compound, formula, molecule, pH, react, solution, valency