pH
英 美['pi 'etʃ]
- abbr. 酸碱度符号（描述氢离子活度的）
英英释意
- 1. (chemistry) p(otential of) H(ydrogen); 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