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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。

3 He made of me a sharp-edged sword and concealed me in the shadow of his arm. He made me a polished arrow, in his quiver he hid me.

他使我的口好似利剑，将我掩护在他的手荫下，使我像一支磨光的箭，将我隐藏在他的箭囊中。

In section 2.2,we prove that if the set of arrows in a quiver is not empty,then NQ is not semisimple.We construct the nonsovable subalgebra of NQ when there is no less than one circle whose length is bigger than one ,and there is no loop in quiver Q,thus leads to a conclusion that NQ is nonsovable .

我们还对只有一个单循环和一个单循环及若干单箭头的箭图，给出了其项链李代数的某些中心元素的具体形式，在2.2节中，我们对非平凡图，即当箭图中有箭头时，利用H中的元素证明了N_Q不是半单纯李代数。

The Jacobi matrix rank one update problems, given either their mix-type eigenpairs or their pricinpal submatrix and defective eigenpairs(the eigenvalues of the matrix and some elements of the corresponding eigenvectors) are also discussed.

n阶对称箭形矩阵与n阶Jacobi矩阵一样只有2n-1个非零元素，类似Jacobi矩阵逆特征值问题的提法，本文提出并讨论了六类对称箭形矩阵逆特征值问题，研究了这类矩阵的结构性质，得到了问题有解的充分必要条件及求解的数值算法和数值算例。

It fell to earth I knew not where;That can follow the flight of a song.Long, long afterwards in an oak,I found the arrow still unbroke;And the song, from beginning to end,I found again in the heart of a friend.

我以为我再也找不到我的箭和歌，但是希望多少年以后，我的箭还是牢牢地钉在树上，我的那支轻快的歌仍记在一个朋友的心间。。。

In order to explore the extraction method of proteome and technique of 2-DE, we compared the extraction method between the TCA-ac-tone and the Tris-HCl, and improved the key steps of 2-DE. The Tris-HCl extraction was the most appropriate for Antiaris toxicaria seed proteome analysis because of the highest resolution and more informative 2-DE map. Those were the solid basis for the later research of studying on the discrepancy expression proteomics of Antiaris toxicaria Seed.

在探索适合箭毒木种子蛋白质组学研究双向电泳方法中，比较了三氯乙酸－丙酮沉淀法、和Tris-HCl法，以及对双向电泳过程中的关键步骤的改良，认为Tris-HCl法为最适方法，所得图谱背景清晰，蛋白质信息量最大，为箭毒木属植物的差异蛋白质组学的后续研究打下了坚实的基础。

For that matter, intention is key even when one does speak the noun; otherwise,"Accio Firebolt" would bring every Firebolt in the world that isn't nailed down, but it doesn't; it only brings the one Harry is thinking of, his own.

在这种情况下，即便说出了后面的名词，意念也还是关键，否则&火弩箭飞来&就会把全天下所有没被钉住的火弩箭全召来，但事实不是如此；咒语只把哈利心里想的他自己的那个给带来了。

Swelling due to water absorption Konjac easily, resulting in the feeling of stomach fullness, thereby reducing the intake of other foods, but Tacca's own high-fiber low-calorie, healthy weight loss has become a popular new choice; Moreover, Tacca variety of food cooking, but also the various kinds of food with, making the application more widely Tacca, we may use a variety of Konjac food to try.04-11-20

膨胀由于吸水性魔芋容易，在胃部产生饱足感，从而减少其它食物的摄入，但箭自己的高纤维低热量，健康减重，已成为流行的新选择，此外，老虎须品种烹煮食物，而且各种食物，这就使得应用更加广泛地箭，我们可能会使用魔芋食品的各种尝试。

The arrow was not painted, as Simon had assumed: rather it was carved from some wood as white as birch bark, and fletched with snow-white feathers.

和Simon之前的推测不民，这支箭并非全无一点装饰：它是用类似白桦树的木质雕刻的，箭羽是雪白的羽毛。

The arrow was not painted, as Simon had assumed: rather it was carved from some wood as white as birch bark, and fletched with snow-white feathers.

和Simon之前的推测不同，这支箭并非全无一点装饰：它是用类似白桦树的木质雕刻的，箭羽是雪白的羽毛。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。