3楼: Originally posted by hnmkwzy at 2012-05-22 11:15:56:
数量经济理论与方法专业也知道pH的意思，牛！

10楼: Originally posted by happyzju at 2012-05-22 14:25:37:
作为习惯写法的pH，通常是不应大写。但作为句子来说，英语的一般要求是“A sentence always begins with a capital letter.” “Each new sentence should start with a capital letter. ”，因此比较好的方式就是改

12楼: Originally posted by hnmkwzy at 2012-05-22 15:34:29:
再问：标题中实词首字母要大写，不在句首的pH的P需大写吗？