hypochlorous acidyoudaoicibaDictYouDict[hypochlorous acid 词源字典]
"A weak acid with oxidizing properties formed when chlorine dissolves in cold water and used in bleaching and water treatment", Mid 19th century: hypochlorous from hypo- (denoting an element in a low valency) + chlorine + -ous.[hypochlorous acid etymology, hypochlorous acid origin, 英语词源]