- PH ＝public health 公共卫生。
【化学】表示氢离子浓度的倒数的对数的符号。
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ph中文什么意思
例句与用法
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- A problem related to nitrification is a drop in ph for the system due to the formation of nitric acid .
和硝化作用有关的一个问题就是由于生成硝酸而使系统内的PH值降低。 - Another proteolytic enzyme, trypsin, is quite inactive at that ph but functions effectively at a ph of 8 .
另一种蛋白质水解酶--胰蛋白酶在此PH时活性甚低而在PH8时效率最高。 at ph values above 12, ferric hydroxide will resolubilize due to the formation of the fe鳎anion. 当pH值高于12时，由于形成Fe阴离子，氢氧化铁会再次溶解。 - Burial diagenesis causes a progressive transformation of smectites, the end-products being dependent on ph and pore water chemistry .
埋藏成岩作用可使蒙脱石进一步转化，最终产物决定于PH值及孔隙水的化学性质。 - The initial ph of solutions of poorly ionized acids depends largely upon the degree of ionization and the titration curves very markedly .
其电离酸溶液开始的pH值在很大程度上取决于电离度，其滴定曲线也非常清晰。
百科释义
In chemistry, pH is a measure of the activity of the (solvated) hydrogen ion. p[H], which measures the hydrogen ion concentration, is closely related to, and is often written as, pH.
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