单词	ammonium persulfate
释义	ammonium persulfate noun : a colorless crystalline salt (NH4)2S2O8 used as an oxidizing agent and for improving dense photographic negatives Word History First Known Use 1891, in the meaning defined above
随便看	alizarine lake alizarine red alizarine S alizarine saphirol alizarine yellow alizarines alizarins alizaris aljama aljamado aljamados aljamia aljamiado aljamiah alk alk gum alka- alkadiene alkadienyl alkahest alkahestic alkahests Alkaid alkakengi alkalemiae

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