Graph theory is a very popular area of discrete mathematics with not only numerous theoretical developments, but also countless applications to practical problems.
图论是离散数学的一个非常流行的研究领域，它不仅有丰富的理论成果，而且也有大量的实际应用。
Based on graph theory in discrete mathematics, the author conducted research on ranking system of round-robin competition.
本文以离散数学中的图论方法，就循环比赛中的名次排列进行了研究与论证，有一定的借鉴意义。
Methods: Refering to the method of electronic glottis graph and mathematics analysis, using 16 characteristic dots, an analysis method and quantitative analysis formula are established.
方法：参照电声门图的研究方法，利用16个特征点，运用数学分析，建立声带振动波形图分析方法及量化分析公式。
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