可以采用边缘条件作为导体的局部非正则点处电场趋于无限大时应遵循的准则。
Edge Conditions can be used as criteria which must be obeyed by electric fields as they approach infinity at the local irregular point of a conductor.
请注意，上面的正则表达式如何只捕获“connection from”和一个非数字的字符串后面的数字和点。
Note how the regular expression above captures only digits and dots, after "connection from" and a string of non-digits.
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