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Jiehan Zheng
Jiehan Zheng
找到啦：「钾钠硝盐溶，铵盐也相同。 硫酸除铅钡，氯除银亚汞。 碳酸磷酸盐，钾钠铵才溶。 溶碱有五位，钾钠铵钙钡。」
May 1, 2010 from Twitter - Comment - Share
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