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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