Description
话说十九世纪的八十年代，交流电已经开始突飞猛进了。可是，爱迪生并不喜欢交流电这个东西，他更喜欢的还是直流电。经过坚持不懈的努力，爱迪生几乎把能用来做灯丝的东西都烧了个遍，最后选定了竹子碳化做成的灯丝。现在灯丝的寿命已经不是啥问题了，可是电从哪来呢，电力系统便成了当务之急。
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