Read Edit View history 二氧化硅 èryǎnghuàguī silica Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 二氧化硅 èryǎnghuàguī silica noun · silicon dioxide (SiO2) 地壳中含有大量的二氧化硅。 Edit Delete References Add reference No references for this word.