When you add water to baking powder, the dry acid and base go into solution and start reacting to produce carbon dioxide bubbles.
当你往泡打粉里加了水，干粉状态的酸和碱溶化，并开始反应，生产出二氧化碳气泡。
Saturated: After the maximum amount of a substance has dissolved, such that no more will go into solution, we say the solution is saturated with the substance.
饱和：已经溶解最大量之溶质之后，而此溶质不再进入溶液中，我们称此溶液已达饱和。
The anode bag with cotton cloth or chemical fiber fabric: made in the set of anode in the, in order to prevent the anode slime slag in the bag of go into solution.
阳极袋：用棉布或化纤织物制成的套在阳极上，以防止阳极泥渣进入溶液用的袋子。
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