谁能用英语介绍一样发明物.什么发明物都行,只要读2分钟半就行了

佳佳丽 1年前他留下的回答 已收到1个回答

翠堤 网友

该名网友总共回答了21个问题，此问答他的回答如下：采纳率：81%

Edison in 1877 after the reform of trial began,and puts forward to make points current,change for the white light lamp the trial after to achieve satisfactory degree must find a glowing combustion to be filament,this material to live in the filament heat two QianDu one thousand hours of combustion.At the same time usage to simple,can endure blow touch,daily use of cost,make even a light bright and destroy not affect any other a light bright and destroy every lamp,keep the relative independence in order to choose this do light that was very bold vision,need great efforts to explore under and to experiment

1年前他留下的回答

8

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