By access to information,determination methods of alumina are mainly including chrome azurol S method and aluminon method.
经查阅资料,测定的主要方法有铬天青S法和试剂法。
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Right in the midst of this half-sad, half-sentimental reverie, she heard a familiar voice behind her say earnestly: " And allophite is the new hydrous silicate of alumina and magnesia, much resembling pseudophite, which Websky found in Silesia" .
就在这种半是悲伤、半是感伤的遐想中,她听到身后一个熟悉的声音恳切地:“石是一种新的氧化和氧化含水硅酸盐,很像韦伯斯基在西里西亚发现的假晶石。”