21.磷酸的结构式如下图所示 磷酸分子与磷酸分子的羟基之间可以脱去水三个磷酸分子可以脱去两个水分子生成三聚磷酸含磷洗衣粉中含有三聚磷酸的 Template




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tomski21.磷酸的结构式如下图所示 磷酸分子与磷酸分子的羟基之间可以脱去水三个磷酸分子可以脱去两个水分子生成三聚磷酸含磷洗衣粉中含有三聚磷酸的 coloring