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	obsequy observabilities observability observable observables observably observance Poynting's theorem poyou poyous Poznan pozole pozsony pozzies pozzolan pozzolana pozzolanas pozzolanic pozzolans pozzuolanas Pozzuoli poète maudit pp ppb PPC

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