搜索 - 科创

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通入顾客房间的电流有极小的一部分被引出一对电池，每只电池都有两块浸在硫酸锌溶液里的锌板。两块电池的锌板成串联相接，造成相互制约。用户使用的电流量，与从阳极锌板流向阴极锌板的金属重量成正比。

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