小苏打
碳酸氢钠

[ noun ]
a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid
<noun.substance>

Sodium bicarbonate \Sodium bicarbonate\,
a white crystalline substance, {HNaCO3}, with a slight
alkaline taste resembling that of sodium carbonate. It is
found in many mineral springs and also produced
artificially,. It is used in cookery, in baking powders, and
as a source of carbonic acid gas (carbon dioxide) for soda
water. Called also {baking soda}, {cooking soda},
{bicarbonate of soda}, {bicarb}, {saleratus}, and
technically, {acid sodium carbonate}, {sodium acid
carbonate}, {primary sodium carbonate}, {sodium dicarbonate},
etc.