刘联，山东大学血液肿瘤学博士，免疫学博士后，山东大学齐鲁医院化疗科副主任医师，山东大学副教授，硕士研究生导师。兼任中国抗癌协会山东分会肿瘤康复专业委员会委员，中国肺癌杂志审稿人。
一些树木，像易建联科克昂首挺胸，和一些像朵朵白云，范一些刘像瀑布，我真的很喜欢一个美丽的壁画啊！
Some trees, like Yi Keke heads held high, and some like a blossoming white clouds, some of Fei Liu and down like a waterfall, I really like a beautiful mural ah!
2003年刘提出的图的联树（1979的文章体现了这种思想）为嵌入亏格分布的研究提供了理论基础。
Liu created joint trees, initiated in his early paper in 1979, of a graph in 2003 which provided a foundation on studying embedding genus distribution.
本文利用刘彦佩提出的嵌入的联树模型，得出了两类新的四正则图的完全亏格多项式，并推导出已有结果的两类图的完全亏格多项式。
In this paper, We obtain the total genus polynomials for two new classes of 4-regular graphs by using the joint tree model of a graph embedding introduced by Yanpei Liu.
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