Aluminum sulfate formed naturally in alunogen could be extracted directly with water.毛矾石中含有天然形成的硫酸铝,可直接用水浸取....

毛矾石...

alunogen的音标：alunogen的英式发音音标为：[əlʌ'nəʊdʒɪn]alunogen的美式发音音标为：[əlʌ'noʊdʒɪn]...