最早的时候，腓尼基字母一共有22个，其中就没有u，只有v，也没有w。 到了大概11世纪的时候，人们把两个字母v连在一起创造出了字母w，所以最早的时候： w=double v 后来，为方便区分元音的v. W = fs 怎样用最简单、最通俗、最白话的方式来理解？ 在百度搜索这个问题： 为何电功率计算公式为 p=ui？ 看到 york young 回答内容的第三段中 w = fs 就看不懂了。 百度 w = fs.
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