重碳酸钙 chóngtànsuāngài calcium bicarbonate Origin Definitions Defs Strokes Stroke Words Sentences Sents 重 chóng adjectivenoun layer [layer]碳酸钙 碳酸鈣 tànsuāngài calcium carbonate calcium carbonate; a white solid substance insoluble in water that is used to manufacture cement, ceramics, lime, and medicinal products