资料来源 : pyDict

二甲基

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Xyloquinone \Xy`lo*qui"none\, n. [Xylene + quinone.] (Chem.)
   Any one of a group of quinone compounds obtained respectively
   by the oxidation of certain xylidine compounds. In general
   they are yellow crystalline substances.