如图所示在烧杯中加入盐水然后将连在电压表上的铜片和锌片插入盐水中这样就制成了一个电池.观察电压表指针的偏转与接线可知这个电池的电压是 Template




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tomski如图所示在烧杯中加入盐水然后将连在电压表上的铜片和锌片插入盐水中这样就制成了一个电池.观察电压表指针的偏转与接线可知这个电池的电压是 coloring