Using dlsym to extract a hidden symbol returns NULL.

使用dlsym提取一个隐藏的符号将会返回NULL。

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In statistical terminology, this sampling variability explanation is called the null hypotheses. (the null hypothesis is designated by the symbol Ho.)

在统计学术语中，这个抽样可变性说明被称为虚假设(null hypothesis)。

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Many SSL certificate companies will allow people to attach a programming symbol called a "null character" into the Web address onto the certificates they receive.

许多SSL证书的公司将允许人们重视编程象征所谓的“空字符”进入网址上他们获得的证书。

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