This website has approximately 275,000 unique visitors per month (measured by unique IP addresses).
题目
This website has approximately 275,000 unique visitors per month (measured by unique IP addresses).
这句话里unique visitor是什么意思
答案
计算机术语--------------来自独立IP地址的访客
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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