1、All K atoms coordinate with o atoms of phenolic hydroxyl group and nitro-group simultaneously.
所有的K離子均同時(shí)與酚羥基和硝基的氧原子配位。

2、Having only one hydroxyl group to react with acids.
一元酸的只有一個(gè)可與酸發(fā)生反應(yīng)的氫原子團(tuán)的

3、Any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself.
任何含有除自身的羥基外其他羥基的酸。