By using bicarbonate of soda with something containing acid, such as.
碳酸氢钠于某些含酸物质如酒石酸氢钾、糖浆或糖蜜、或譬如象姜汁饼和苏打饼配方中的酸乳等等一起使用。
Bicarbonate of soda was used as the basis for most toothpowders, and some contained other ingredients that would not be considered appropriate today, such as sugar.
大多数的牙粉将小苏打用作基础原料，还有一些牙粉含有诸如糖精等在今天看来不适宜采用的成分。
By using bicarbonate of soda with something containing acid, such ascream of tartar, syrup or treacle, or sour milk in for example. ginger
碳酸氢钠于某些含酸物质如酒石酸氢钾、糖浆或糖蜜、或譬如象姜汁饼和苏打饼配方中的酸乳等等一起使用。
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