乙二胺 [－－－]

Jyutping jyut3 ji6 on1
Pinyin yǐ èr ān

Definitions (Wiktionary)

noun
ethylenediamine

乙二胺 [－－－]

Jyutping jyut3 ji6 on1
Pinyin yǐ èr àn

Definitions (Wiktionary)

noun
ethylenediamine