| 单词 | pH value |
| 释义 | pH /pē-āchˈ/ or pH value /valˈū/nounA number used to express degrees of acidity or alkalinity in solutions, formerly the logarithm to base 10 of the reciprocal of the concentration of hydrogen ions, but now related by formula to a standard solution of potassium hydrogen phthalate, which has value 4 at 15ºC ORIGIN: From Ger Potenz power, and H the symbol for hydrogen |
| 随便看 |
|
英语词典包含305067条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。