The principal square root function is defined using the nonpositive real axis as a branch cut.

主平方根函数是使用非正实轴作为分支切割定义的。

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An absolute pathname begins with the root directory and follows the tree branch by branch until the path to the desired directory or file is completed.

绝对路径名从根目录开始，通过一个又一个的分支，一直到你要去的目录或者文件为止。

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The root directory, denoted by a forward slash (/), is at the base of this tree, and each subdirectory off of the root is a branch of the tree.

根目录是这个树的根，由前向斜杠 (/) 表示。 每个子目录都是树的分支。

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The report said the agencies should conduct "root and branch" reform of the way they do business - to tackle perceived conflicts of interest and correct flaws in the way they award ratings - or face tougher regulation.

BBC: FSA warning on risk 'deficient'

He wrote back then to the Presiding Officer asking her to set up a root and branch review of the Assembly's procedures and how its engagement with the public might be improved.

BBC: FMQs is back. Oh yes it is.

The FA board has also sanctioned a "root and branch" examination of the whole England team set up, led by FA chief executive Brian Barwick, whose own position has been questioned in the wake of the team's failure to qualify.

CNN: McClaren sacked after England exit