By the experiment,the optimal conditions of preparing PAC were got,the alkalization B is 2.0,the concentration of NaOH is 0.2 mol/L,and the concentration of AlCl3 is 0.5 mol/L.是什么意思_By the experiment,the optimal conditions of preparing PAC were got,the alkalization B is 2.0,the concentration of NaOH is 0.2 mol/L,and the concentration of AlCl3 is 0.5 mol/L.在线翻译_英语_读音_用法_例句