韓玉根 的英文怎麼說

中文拼音 [hángēn]
韓玉根 英文
han yugen
  • : 1 (周朝國名) han (a state in the zhou dynasty)2 (戰國七雄之一) han (one of the seven power...
  • : Ⅰ名詞1 (玉石) jade 2 (姓氏) a surname Ⅱ形容詞(比喻潔白或美麗) (of a person esp a woman) p...
  • : Ⅰ名詞1 (植物的營養器官) root (of a plant) 2 (比喻子孫後代) descendants; posterity 3 [數學] ...
  1. In this paper, we mainly discuss the topological structure of several classes of special fourth polynomial differential systems with the first and the third critical singular point. as in paper [ l ], mr han yuliang have discussed the system in the first critical case and the system in the third critical case ( where b, a30 0 in system ( l ) and ( 2 ) ) here, we use the tools and method of paper [ l ], to study the system where, 040, b04r - { 0 }, where, 640, ao4r - { 0 }, 631, 622513, b04er for the system ( 3 ) and ( 4 ), because of their only one finite singular points, and they are saddle - nodes, we can easily give the result that there is no limit cycle in their phase portrait

    本文主要是研究在第一及第三臨界情形下的幾類特殊四次多項式微分系統的全局拓撲結構,在文獻中,良主要考慮了第一臨界情形下的系統及第三臨界情形下的系統的全局結構,並畫出它們所有可能的全局相圖, (在( 1 ) , ( 2 )中, b : a _ ( 30 ) 0 )本文據文獻的工具和方法,考慮系統:其中,以及系統其中,這樣,由於等號右端多項式次數的增加,極限環的存在性問題變簡單了,但討論系統的全局結構時,特別是作全局相圖時,難度增大了。
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