单词 pyrogallic 释义 pyrogallic, a. Chem.|parglk|[f. pyro- 3 + gallic a.2]Produced from gallic acid by the action of heat: in pyrogallic acid, an acid substance, C6H6O3 (strictly a trihydric phenol, C6H3(OH)3, hence systematically named pyrogallol), whic...