单词：ph 

名词

• 
  [1.n.ph] (同义词:[pH( [域] Philippines , 菲律宾 abbr. [军] Probability of Hit, 命中率 )]  [pH_scale]  )
• 
  注释列句：(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);
• 上位词 -> [hydrogen_ion_concentration]  [concentration( n. 集中, 集合, 专心, 浓缩, 浓度 )]  [property( n. 财产, 所有物, 所有权, 性质, 特性, (小)道具 )]  [attribute( n. 属性, 品质, 特征, 加于, 归结于 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 下位词 -> [acidity( n. 酸度, 酸性, [医]酸过多, 胃酸过多 )]  [alkalinity( n. [化]碱度 )]  [neutrality( n. 中立, 中性 )] 
  所 有 -> [chemistry( n. 化学 )] 
  种 类 -> [chemistry( n. 化学 )]