Read Edit View history 五氧化二钒 wǔyǎnghuà'èrfán vanadium pentoxide Origin Definitions Defs Strokes Stroke Words Sentences Sents 五氧化二钒 五氧化二釩 wǔyǎnghuà'èrfán vanadium pentoxide vanadium pentoxide V2O5; vanadic anhydride