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At the basis of them, In this paper, by calculating adjacency characteristic polynomial, the number of closedcircuit, using the property that bipartite graphs with same Laplacian spectrum must be Line-cospectral and the property of graphs with the same eigenvalues and angles to study some non-regular graphs with special structure.

在前人的基础上，本文通过计算图的邻接特征多项式，闭路数目，利用二部图同Laplacian谱必Line-同谱的性质，以及有相同特征值和角的图的一些特点来研究一些特殊结构的非正则图的谱确定问题，得到了如下一些结论：(1)两个不同构的C_(n_1，(n_2)，(n_3)，(n_4)图没有相同的邻接谱。

In addition,a straight chain graph with three points is studied.This graph represents a general result of the deleetion of numerous partly isospectral molecules....

本文建议了构造部分同谱分子的扩展法，用三个简单的部分同谱图为例，说明了这种方法的应用。

The concept of congruence is an important content of the universal algebra and congruences play a fundamental role in defining the structure and properties of the universal algebra.

同余是泛代数的重要研究内容，泛代数上的同余在一定意义上能够刻画和确定泛代数的结构和性质。

We also prove that the lattice of group congruences on a regular semigroup is isomorphic to the lattice of its full admissible subsemigroups.

另外，还证明了正则半群的群同余格同构于它的完全容许子半群的格。

The author establishes a criterion on which the existence of solutions can be judged for the higher order congruences of prime modulus .

给出了素数模高次同余式有解的1个判定准则，在有解时直接得出解的个数，并通过解1个次数最低的同余式得到其所有解，最大限度地减少代入检验求解的计算

Special congruences are introduced in partialAbelian semigroups and it is shown that under some condition the quotient in-duced by a special congruence is also a partial Abelian semigroup.

我们引入了其上的特殊同余，在一定条件下，证明了该同余类所诱导之商仍是部分Abelian半群。

Secondly, in a more generalized framestructrue--lattice-ordered monoids,the notion of lattice-valued Mealy-type automata is introduced,we traverse some algebraic properties of this automata and investigate the congruences and homomorphisms of this type automata.Our main results indicate that the algebraic properties of lattice-valued Mealy-type automata have Close links to the algebraic properties of lattice-ordered monoids which automata take values in.Futhermore we study the minimization of lattice-valued Mealy-type automata and provide an algorithm to achieve the minimal lattice-valued Mealy-type automata within finite steps.

其次，在更一般的框架—格半群意义下，提出具有输入和输出字符的自动机——格值Mealy自动机的概念，从代数角度出发较详细地研究了此类自动机具有的性质，同时研究了此类自动机的同余和同态，揭示了此类自动机的代数性质和格半群的紧密联系，最终研究了格值Mealy自动机的极小化问题，并给出了在有限步可实现此极小化的算法。

In the study of isospin-dependent nucleon-nucleon elastic crosssections in nuclear medium we find the medium correction of nucleon-nucleon scatteringcross sections is also isospin dependent,〓 depends on the baryon density weakly and 〓 depends on the baryon density significantly.

用QHD-Ⅱ模型研究了介质两体截面的同位旋相关性，研究结果表明截面的介质修正也是同位旋依赖的：中子-质子介质截面对核密度的依赖很弱，而中子-中子的介质截面对核密度的依赖很强。

The maize inbred line (Chang 453) from Millet Institute, Shanxi Academy of Agricultural Sciences was directly utilized. The high yield large-ear and early-maturing maize single-cross variety Tongdan 36 was bred by inbred-line Chang 453 and Tong 303. It built new heterotic pattern and broke through four heterotic groups limitation now. The heterotic pattern used was Gold-en-queen Х Xianfeng in American (Golden-queen Х P group).

再利用山西省农业科学院谷子研究所玉米自交系长453作母本、同303作父本，育成高产大穗型早熟玉米杂交种同单36号，突破了现有4大血缘的局限，以金皇后血缘材料和美国先锋血缘材料进行杂交，建立了金皇后×P群的新模式。

An interesting property of a universal homogeneous object is that not only all finite structures in the background category can be embedded into it, but also any such two embeddings can be transformed into each other by an automorphism of the universal object (and hence it is called homogeneous).

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。