拷面包,拷蛋糕,。。。。。。。。。。

来源: europe 于 2006-07-21 06:03:43 [] [旧帖] [给我悄悄话] 阅读数 : (178 bytes)

baking soda
baking soda is also known as sodium bicarbonate or nahco3. the baking soda used for these tests was arm and hammer brand, purchased at the local grocery store.

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