feather alum造句

"feather alum"是什么意思

造句与例句手机版

A pseudo alum is a double sulfate of the typical formula, where " A " is a divalent metal ion, such as cobalt ( wupatkiite ), manganese ( apjohnite ), magnesium ( pickingerite ) or iron ( halotrichite or feather alum ), and " B " is a trivalent metal ion.
It's difficult to see feather alum in a sentence. 用feather alum造句挺难的

相邻词汇

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