单词copper penny
网络: 铜便士；浅金铜色；号柔铜色
This is a single cell of a battery . The zinc nail and the copper penny are called electrodes . The lemon juice is called electrolyte.
如图所示是一个单芯的电池。镀锌钉和铜硬币就是电池的电极。而柠檬中的柠檬汁就是电解质。
You need some necessary items for battery maintenance that are can of cola, Baking soda, Toothbrush, Petroleum jelly, Copper penny.
维护您的汽车电瓶需要一些必要物品，这些物品包括：一听可乐、碳酸氢钠、牙刷、凡士林油和铜片。
Strip a copper penny to the peak of the battery.
把铜片压成条置于电瓶顶部。
For example, if you took a copper penny and cut it in half.
例如，如果你把一分面额的铜币切割成两半。