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Based on the methods and techniques of covering theory, the structure of module category of tame concealed algebra, one-point extension, vector space category, finite enlargement, degeneration theory, stable equivalence and combinatorial method, we will classify all of the three-point algebras with Gabriel quiver the system quiver Q according to representation type. We get the classification theorem: Let A=kQ/I be a three-point algebra given by the system quiver Q.

本文综合利用覆盖理论，tame concealed代数模范畴的结构，单点扩张，向量空间范畴，有限enlargement，退化理论，稳定等价以及组合的方法等多种方法和技巧，将所有由系统箭图Q给出的三点代数按表示型进行分类，得到如下分类定理：Q是系统箭图，I是kQ的一个admissible理想。

Study of Optimization DesignThis paper programs three Command Batch Files that can respectively perform optimization designs of 4-point-supported-glass, 6-point-supported-glass and the specially designed 6-point-supported-glass.

这三段命令流可供熟悉ANSYS操作的工程设计人员使用。

Near to 0 point, the force accumulation is more and more and produces heavy substance, which is lighter more externally. At the time the force is accumulated more, the accumulation of force is certain bigger, and the space of corresponding 1 degree goes back to 0 degree when one side or one point returns to 0 degree, and the composition of forces each other is more than their repulsion, and the repulsion of final composition point is bigger than that of repulsion themselves, push them to different directions quickly, and stop until repulsion among them is equal to their repulsion.

离0点近的，力积累越多形成的是重物质，越往外越轻，这时候力越积累越多，力的积累也相当的大，相对应的1度的空间，在一面或一点都回到0度，互相斥力的合力大于他们自己的自身的斥力，最后合力点大于了他们自身的斥力，把他们快速推向四方，直到他们之间互相斥力的合力等于他们的斥力才停止。

Before acting as and processing a kind of crude oil, want color, smell and boiling point to determine crude oil and heat up Cheng, density, viscosity, condensation point, flash point, ignite, spontaneo

当加工一种原油前，先要测定原油的颜色与气味，沸点与馏程，密度，粘度，凝点，闪点，燃点，自燃点，残炭，含硫量等指标，即是原油评价试验。

Accoring to the polar theory of conic section, the characteristics of geometrical graphics concerning the conic section is discussed from following three aspects:the conbination of Point and line, harmony of point range and pencil of line , trace of point and enveloping of straight line.

本文根据二次曲线的配极理论，从点、线的结合性，点列和线束的调和性，点的轨迹和直线的包络三方面研究与二次曲线有关的几何图形的性质。

Through the analyzing, we can know that the general situation of the retailing industry's internationalization in china and the reason of retailing industry's internationalization; we analyze the condition of the overseas retailing industry's internationalization and their general situation and the effect of the investment in china for consulting; we summarize the advantages and disadvantages of Chinese and overseas chain retailing company in domestic competing situations, then analyze, point out the advanced point of the overseas retailing industry and the lacking point of the Chinese retailing company; based on the contradistinctive analyzing, combining the trend of present retailing industry's development, we could make the developing strategy for the Chinese retailing industry in the future.

通过分析了解我国零售业国际化的概况以及零售业国际化的动因；为了具有参照性，对国外零售业的国际化状况进行分析，分析他们的概况以及在中国投资的影响；总结本土竞争环境下中国与外国连锁零售企业所具有的优势与劣势，进行对比分析，指出外国零售企业的先进之处和中国零售企业的不足；在对比分析的基础上结合当今零售业发展的趋势提出未来中国零售企业的发展对策。

On the basis of the conclusion above, the nonlinear weak controllable vectors can be obtained, which compose the second class of weak controllable matrix, by means of matrix transfermations of the first class of weak controllable matrix. Furthmore the second criterion of weak controllability, accessibility and strong accessibility, which is more standard, more succinct and more practical, is obtained. On the basis of the first criterion and the second criterion, several important problems about nonlinear controllability are discussed, which include 1 local controllability; 2 three classes of local controllable decomposition, separately by means of local coordinate changes in the neighborhood of a nonsingular point, a point on a singular surface or a designated point x〓 with a designated input u〓; 3 the character of controllability of the ith state variable x〓 in different controllable areas and their boundaries.

在第一判别定理和第二判别定理的基础上，我们分析了非线性系统受控性质中的几个重要问题，所得到的结论包括i得到了非线性系统在可平衡点附近的能控性判别定理；ii分别给出了非线性系统在非奇异点、s阶奇面以及在状态空间内给定的一点x〓和输入u〓上的三种状态分解形式以及相应的求解方法；利用系统的Ⅰ型弱能控矩阵与Ⅱ型弱能控矩阵秩相等的条件，得到了只用系统的前n个弱能控向量来判断系统的弱能控性的判别定理；iii通过引入系统状态分量的三类受控区域边界的定义及相应的求解方法，初步探讨了非线性系统各个状态分量在不同的受控区域及其边界上的受控性质。

However, since the fixed-point calculation maybe cause cumulative quantization error, the convergent performance of fixed-point equalizer is not better than that of floating-point equalizer.

但由于定点数运算会引起量化累积误差，均衡器的收敛速度比浮点数运算均衡器的收敛速度要慢，收敛后的稳定性也较差。

Personal e-commerce applications in a straight line from the current point-to-point multi-point approach to the development of the smart.

个人对电子商务的应用将从目前点对点的直线方式走向多点的智能式发展。

A point-to-point link, the main task of which is to transport data from one point to another.

一种点到点链路，主要的任务是将数据从一点传输到另一点。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。