n. 重碳酸盐

[化] 碳酸氢盐; 酸式碳酸盐

[医] 碳酸氢盐, 重碳酸盐

[ noun ]
a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate
<noun.substance>

Bicarbonate \Bi*car"bon*ate\, n. [Pref. bi- + carbonate.]
(Chem.)
A carbonate in which but half the hydrogen of the acid is
replaced by a positive element or radical, thus making the
proportion of the acid to the positive or basic portion twice
what it is in the normal carbonates; an acid carbonate; --
sometimes called {supercarbonate}.