本文利用比较判别法，提出了一个全新的、更为一般的判别方法——根比判别法。
This article introduces a completely new and more general way: Root Ratio by the way of comparison.
文章着重介绍了在正项级数比较审敛法的极限形式中，用等价无穷小的方法来判别正项级数的敛散性。
This paper is mainly about recognizing convergence with the methods of infinitesimal equivalence in the limit form of convergence criterion in series of positive terms .
研究了电力系统同调等值法，比较了同调机组判别，发电机聚合及网络化简不同的方法。
In this dissertation, different methods of equivalents are compared by showing the advantage and the disadvantage of each one.
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