quintic
/ˈkwɪntɪk/ 74of or relating to the fifth degree 五次的
adjective [原级]（数学）五次方的；五次的
It is the first time that 7 limit cycles can bifurcated from the infinity for a class of quasi quintic system.
首次证明了拟五次多项式系统在无穷远点能分支出7个极限环。
noun [专属名词]（数学）五次多项式（方程）
In this paper, the problem of limit cycles bifurcated from the equator for a quintic polynomial system is investigated.
本文研究一类五次平面多项式系统赤道极限环分支问题。
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