环

So, it is hard to conclude that the south loop is a complete loop or only an ejection.

观测资料的分析结果显示，我们只能看到南环的一条腿，因此我们无法肯定南环到底是一个完整的环，还是仅仅是一个喷射体。

By using the Euclidean algorithm and invertible linear transformation over a polynomial ring, the solutions of polynomial indeterminate equations of first degree was investigated in theory, and its matrix solution based on the elementary matrix transformation was proposed.

利用欧几里德算法和多项式环上的可逆线性变换，从理论上对多项式环上的一次不定方程组的解进行深入的研究，给出了用矩阵的初等变换求解多项式环上的一次不定方程组的矩阵解法，并利用MATLAB数学软件开发了相应的计算机程序。

Applying elliptic integral to calculate the electric potential due to uniformly charged ring, and then gets the general expression of the electric intensity by using gradient operation.

0引言对于均匀带电圆环电位和电场分布，在许多电磁学文献中仅仅只计算了与环面垂直的中心轴线和离圆环很远区域的电位和电场，而对其周围空间任意一点的值未作讨论。

Finally the spatial distribution figure for electric potential is plotted and analyzed. This method can be used in calculating many similar problems. charged ring ; electric potential ; electric intensity ; elliptic integral

为原点，环轴为z轴，取圆柱坐标系，如图1所示，设尸为环轴外任意一点，下面来求圆环电荷在尸点产生的电位。l「do甲叹r，尹，z夕一二二丁{而一石二竺石万一=，诊L七OJ ql月、—月龟I (1)这个积

Finally, sufficient and necessary conditions for endomorphism rings of some special modules to be semi-π-regular are given.

最后，我们对半π正则环作了一定的研究，给出了一个直投射模的自同态环是半π正则环的充要条件。

There are 11 known rings and the brightest and outermost ring is called the Epsilon ring.

已知有11环，最聪明和最外层的环称为小量环。

The progress in the catalytic ring-opening polymerization of ethylene oxide and propylene oxide is reviewed in this paper.

环氧乙烷和环氧丙烷的开环聚合产物在表面活性剂工业和聚氨酯工业得到了极为广泛的应用。

Particularly,ethylenediamine is an optimal choice for improving the selectivity for cyclohexanone oxime.

在催化剂与硝基环己烷摩尔比为1∶100、反应温度95℃的条件下，反应6h后的硝基环己烷转化率可达100%，环己酮肟选择性可达84.2%。

By using the Euclidean algorithm , the matrix solution of indefinite equation of first degree is discussed.

利用高斯整环上的欧几里德算法给出求解高斯整环上的多元一次不定方程通解的矩阵解法，同时利用MATLAB数学软件给出相应的计算机求解高斯整环上一次不定方程的通用程

Theorem 2.1.4 The following statements are equivalent for a ring R:(1) R is left co-semihereditary;(2) every finitely cogenerated factor module of a finitely cogenerated injective R-module is quasi-injective;(3) every finitely cogenerated factor module of a finitely cogenerated injective R-module is direct-injective.

an环 R下列叙述等价： l）R的每个商环是强左余半遗传的； 2）R的每个商环是左余半遗传的； 3）拟内射R模的每个有限余生成商模是拟内射的； 4）有限余生成拟内射R－模的每个有限余生成商是直内射的； 5）有限余生成fi－(来源：A3fBC论文网www.abclunwen.com)拟内射R－模的有限余生成商模是拟内射的。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。