過氧化氫 [过－－氢]

Jyutping gwo3 joeng5 faa3 hing1
Pinyin guò yǎng huà qīng

Definitions (CC-CEDICT)
  1. hydrogen peroxide H2O2
Definitions (Wiktionary)
  1. noun
    hydrogen peroxide
    (syn.) 双氧水, 雙氧水