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1)  perfect trees
完美树
1.
In this paper,lower bounds on the spectral radius of adjacency matrices of trees and perfect trees are discussed by algebraic method and edge switching of graph,and all trees which reach lower bounds on the spectral radius are obtained.
利用代数方法、图的边变换,以及树的邻接矩阵谱与L ap lacian谱的关系,研究树和完美树的邻接矩阵谱半径和L ap lacian谱半径的下界,给出达到下界的所有极树,得到的新结果改进了文献[2]的结论。
2)  the perfect of T shape tree
完美T形树
1.
This paper discuss the matching uniqueness of the perfect of T shape tree, it is matching unique with necessary and sufficient condition Were obtained.
研究了完美T形树T(l1,l2 ,l3 )的匹配唯一性 ,给出了其匹配唯一的充分必要条件 。
3)  Trees with Perfect Matchings
完美匹配树
4)  perfect [英]['pə:fikt]  [美]['pɚfɪkt]
完美
1.
Many implications and unavoidable imperfects in software practices, as the uncontrollable and the unknown parts, offend the foundation of most existed methodologies.
软件开发实践中存在的隐含成分和无法回避的“不够完美”,就是现实软件开发项目中的无法控制或未知部分,这违反现存的大部分软件开发方法的基础,如一致性。
2.
From mathematical Aesthetics four levels starting of"Appearance, Beautiful, Wonderful, Perfect",Explore the mathematical problem solving functional aesthetics.
文章从数学美学的"美观、美好、美妙、完美"四个层次出发,探讨数学解题中的美育功能。
3.
ZHUANG Zi s concept of art reflected in his works about the disabled is: perfect art does not rely on complete form,and incomplete form sometimes implies perfect art.
庄子畸人篇透射出这样一个文艺观:残缺也有美,残缺也可以完美,艺术的完美并不依赖于形式的完整。
5)  perfection [英][pə'fekʃn]  [美][pɚ'fɛkʃən]
完美
1.
This paper discusses that Pythagoras school’s important thinking of “simplicity,harmony,perfection” had produced important effects to Nicolaus Co-pernicus,J.
本文论述了毕达哥拉斯学派“简单、和谐、完美”的重要思想对后来的科学家哥白尼、开普勒、牛顿和爱因斯坦的研究工作产生的重要影
2.
The linked ideas of reverence, ritual, and perfection represent both a challenge and an opportunity for contemporary Confucian political philosophy.
对于当代儒家政治哲学来说,敬、礼和完美这三个相连成系的概念既是一种挑战,又是一种机遇。
3.
By reviewing the characters of the three protagonists-Sarah,Charles and Tina,we can feel the organic combination of existentialist philosophy and literature,understand the human struggle in the evil and cruel reality and the protagonists pursuit of and longing for freedom and perfection.
通过对《法国中尉的女人》中莎拉——追求“完美自由”的存在主义者、查尔斯——追求“完美爱情”的浪漫主义者、蒂娜——追求“完美婚姻”的现实主义者的性格评说,我们可以感觉到存在主义哲学和文学的有机结合,品味出在丑恶冷酷的现实中人性的挣扎,以及作者对自由和完美的追求和渴望。
6)  perfection and beauty
完善完美
补充资料:晶体非完美性
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性质: 晶体的非完美性是相对于具长程三维周期性的理想晶体来说的寄居于晶体有序中的各类缺陷、局部结构无序、对长程周期性的角度偏离、周期波动、周期重复数的递减、化学组成偏离以及晶格的畸变等。缺陷有点、面、体缺陷与电子缺陷之分,涉及空位、间隙原子、位错、台阶、扭结、堆垛层错等。局部结构无序则有原子热振动、原子位置的非完全占有、统计原子、集团旋转、链分子非轴向的取向机遇等形态,对长程周期进行修饰的则有镶嵌结构、无公度调幅晶体与微晶等形态,高聚物中的次晶则存在对长程晶格的重度畸变。

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