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pH scale

中文翻譯：

【化】 pH度標
　

英文解釋：

名詞 ph scale:

  1. (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
    同義詞：pH
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