| 释义 | 
		tungstic acid noun 1.  : tungsten trioxide 2.  : any of various acids derived from tungsten trioxide; especially  : the simplest acid H2WO4 analogous in composition to chromic acid and obtained as a yellow powder or as the white monohydrate H2WO4.H2O but known chiefly in the form of salts — compare heteropoly acid, metatungstic acid, phosphotungstic acid |