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通常我们用符号s来表示弧长。
So, the usual notation that we will have is for arc length.
youdao
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我不知道为何要用s来表示弧长,这只是一个常用的符号。
I'm not quite sure how you get an out of this, but it's the usual notation.
youdao
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我不知道为何要用s来表示弧长,这只是一个常用的符号。
I'm not quite sure how you get an out of this, but it's the usual notation.
youdao