数环

Browkin and so on, an available method to get improved bounds for the norm of exceptional places in computing K〓 groups for the ring of integers in quadratic imaginary fields is obtained and as an application, K〓Z is determined.

Browkin等人工作的基础上，得到了估计虚二次域整环的K〓群的计算中例外位的范数的界的较有效的方法，并且作为应用，确定了K〓Z。

For hundreds of years tiny coral creatures have worked and died to make thousands of ring-shaped islands called atolls.

数百年极小的珊瑚人已经工作而且死使数以千计戒指形的岛叫做环礁。

Because of high speed and large amount of services, protection becomes very important for SDH system design.

分析了四种典型自愈环的结构，保护原理，建立了其概率模型，分析比较了它们的网络可靠性及链路可靠性随故障概率及节点数变化的情况。

On ultra precision lathe, author propose the principle of error in-process measurement and compensation of cylinder, end and contour, and use adjusted straightedge and sensor to build error on-line measurement and compensation control system of end turning.

研究了基于模糊数和插值原理的模糊控制算法，并用该算法实现了压电陶瓷微动刀架伺服系统的闭环控制，使其控制精度达到了±0.01μm；在超精密车床上，提出了圆柱面、端面和轮廓加工的误差在线测量与补偿原理，并利用标定的直尺和传感器建立了端面车削误差在线测量和补偿控制系统。

In chapter 4, we study homological dimensions of H-invariant subring for Hopf astions and smash coproducts.

在第四章，我们研究了Hopf作用的不变子环与smash余积的同调维数。

The research about the subject largely developed and extended the classical results about homological algebra.The theory of relative homological dimensions of modules and rings are the main research field in the subject.

关于这门学科的理论研究，极大的丰富和发展了同调代数的经典结果，而环与模的相对同调维数理论是相对同调代数这一门学科的重要研究领域。

The four sets of stator bars including those retired from three large generators and the standby bar subjected to Dynamic Mechanical Analysis, Scanning Electron Microscopic and optical microscope observation. It was revealed from DMA that the peak value tan d m of mechanical loss thermogram tan d ~ T shift toward a higher temperature and a lower amplitude, indicating that the amount of movement monomers diminished greatly in the insulation aging process, the tan d 195, increased very slightly with the service time of insulation, showing the degrading of bonding properties at interface, and the presence of more defects in insulation. The observation of SEM and optical microscope showed that more and more voids appears in insulation, and delamination was formed due to development of voids in aging process.

对不同运行年数的线棒进行了 DMA 、 SEM 、光学显微镜等微观分析试验，动态力学分析发现(参见 Hao et al， CEIDP， 2002：404)，力学损耗温度谱 tan d ~ T 的峰值 tan d m 随老化时间向高温、低值方向移动，表明促成环氧发生玻璃化转变的活性侧基或发生局部运动的活性链段减少，分子链的刚性增强；195℃的力学损耗 tan d 195随老化时间有缓慢增大的趋势，表明有更多的能量耗散在界面处，界面的粘合性变差，甚至由于界面粘结不良出现微观缺陷； SEM 和光学显微分析发现(参见 Hao et al-2， IEEE DEI， 2003)，老化后的绝缘气隙增多，随着老化时间气隙不断扩展或相互连通，绝缘逐渐分层。

Methods: Mice bearing in vivo transplanted tumor-H22 hepatic carcinoma were used to evaluate the drug"s activity of anti-tumor and GAPSGF"s efficacy enhancing effect by calculating the ratio of antitumor and q. HE dyeing was applied to observe the tumor"s morphological changes after the anti - tumor drug. It is observed the change of theperipheral white blood cells in serum and the body weight to analyze the GAPSGF"s toxicity reducing effect on the anti - tumor drug-Cytoxan. Applying ELISA method to observe the change of IL-2 in serum ,Applying carbon clearance method to test the function of uninuclear phagocyte,took the weight of the spleen and thoracic gland, analyzed the mechanism — efficacy enhancing and toxicity reducing of GAPSGF.

构建体内动物移植性H_(22)肝癌模型，通过计算抑瘤率与q值来分析药物的体内抗肿瘤活性，判断树舌多糖GF注射液的增效作用；采用瘤组织常规HE染色观察药物作用下的肿瘤细胞形态变化；观察外周血WBC数和体重改变来分析树舌多糖GF注射液对环磷酰胺抗肿瘤的减毒作用；采用ELISA法测定血清IL-2、小鼠碳粒廓清法测定单核吞噬细胞功能、取胸腺与脾脏称重测定脏器指数等以分析树舌多糖GF注射液增效减毒的作用机制。

This quick service sub business is located near Dupont Circle in a upper income residential area that has several hotels, embassies and offices and good foot traffic within a two block radius.

该快餐分店位于华盛顿都彭特环区的一个收入较高的居民区，该区拥有数个宾馆、大使馆及事务所，两个街区内的客流量非常大。

The design of output feedback H(subscript ∞) controllers is discussed for nonlinear discrete singular systems. First of all, by means of generalized Lyapunov function and linear matrix inequalities, zero solution E-asymptotically stable is studied for the system, a sufficient condition is given such that the system is zero solution E-asymptotically stable and a H(subscript ∞) norm constraint. And the output feedback H(subscript ∞) controller is designed to guarantee the performance of the resulting closed-loop system.

主要对非线性离散广义系统的输出反馈H控制器的设计问题进行讨论，首先利用广义Lyapunov函数和线性矩阵不等式，对系统的零解E-渐近稳定性问题进行分析，在此条件基础上给出系统零解E-渐近稳定且具有H范数约束的充分条件，然后设计系统的输出反馈H控制器，使得闭环系统具有同样的性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。