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                什∏么是电压?

                发布日期: 2015-03-05

                  答:电压也ξ叫电位差,它◣和水位差的意思是一样的。水面的高低差别叫水位差或水压,水位差越大,水流越急,越远,越快。电位↘的高低差,叫电位或电压,电压越高,电流传送就越远。

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