角条件

All is done in the mapping plane about the developed plane of acylindrical shell.Furthermore,applied orthogonal function expansion technique,the problem can be finally summarized into the solution of a series of infinitealgebraic equations.

在第四章中，在保角映射平面上给出了大开孔圆柱壳在外部载荷作用下，广义内力、边界条件以及孔边应力集中系数的一般表达式。

In order to maintain the system stability the constraint is such that the phase-angle difference between any two generating sources in the to-be-interconnected electrical power systems should not exceed a permissible value, The tie line is selected based on the minimum annual cost, with the costs of both the new tie line and the necessary network expansion in the original electrical power systems...

该模型以联合电力系统中各电源点之间相角差均不超过允许值作为保持系统静态稳定性的约束条件，在按年费用最小选择联络线方案时，同时计及了新建的联络线和原有电力系统中网络的扩建。文中还给出了某两个电力系统联网的分析计算结果。

The stability and bifurcation of the equilibrium states of the rod are analysed by using the singularity theory of phase plane.

在两端受力矩单独作用的条件下，杆的平衡微分方程可转换为用欧拉角表述的一阶自治系统，并有可能利用相平面的奇点理论分析弹性细杆平衡状态的稳定性。

It is linear relation between the gas discharge voltage and the single-pulse output energy both of the two laser cavity, when the voltage is 28kv the single-pulse output energy of the corner-cube cavity and the right angle cone cavity are 14.6J and 25.5J respectively, the same as the output of the plane concave cavity in the same condition.

两种谐振腔激光器的单脉冲输出能量与放电电压均呈线性关系，在放电电压28kv时，角隅腔和直角内圆锥腔单脉冲输出能量分别为14.6J和25.5J(来源：A0626BC论文网www.abclunwen.com)，和相同条件下的平凹腔输出相当。

Some new method is presented in this paper: A. An Integrated parameters computation method to analysis asynchronous operation of the turbine generator is given, including the equivalence of short circuit and open circuit of field windings, deducing boundary condition of 〓 method and computing frequency parameters. B. A new memory structure for sparse complex matrix and a PCCG method based on it are introduced to save memory and computation time. C. An equivalent method of vacuum is presented, and effectively eliminate the effect of corner point and accelerate convergence of PCCG method. D. Coupling the computation of electromagnetic and temperature field is discussed and model for computing temperature field of the turbine generator rotor at asynchronous operation is built.

文中提出了以下新方法：(1)在失磁异步运行转子三维涡流场计算中提出了完整的参数计算方法，其中包括励磁绕组开、短路的等效，〓法边界条件的推导及频率参数的计算方法；(2)提出了铁心内空气域的等效方法，有效地解决了开槽引起的角点奇异问题，并提高了方程组的迭代收敛速度；(3)在〓法有限元模型中，创立了一种能节约内存、提高计算速度的压缩存储矩阵格式，并建立了基于该格式的方程组解法；(4)提出了涡流电磁场和温度场两种不同场计算的合理结合方法，建立了转子三维稳态和时变温度场的有限元计算模型。

This method includes the method of profile data modeling in theory, bound searching method of expansion polar angle corresponding theoretical points and evaluation method of least-deviation profile error.

包括实现轮廓度测量的理论轮廓数据建模方法、对应理论点的扩展极角定界搜索方法以及满足最小条件的最小极偏差轮廓度误差评定方法。

The transformation between coordinates of light wave and coordinates of polarimeter was determined by Euler's angles. The direction of vibration passed by polarimeter and its value was studied.

利用欧拉角表示光波坐标系和偏振器坐标系之间的变换，得到透过偏振器后偏振光的振动方向及其大小的数学表述，给出了简化表达式及其使用条件。

First, a map between the cones and tangent surface on C-Bézier curve und two-dimensional plane is found respectively and then a ruled surface between two Bezier curves is constructed and a sufficient condition on its developablity is given.

zier曲线上锥面、切线曲面的展开方法。然后，构造两条空间B？zier曲线上的直纹面，给出了它成为可展曲面的一个充分条件，并通过保角保长原则，将其贴合到平面上。

It is understood that the Gansu Endangered Animals Research Center since its inception has been the introduction and breeding of Saiga antelope, Equus przewalskii, wild camel, wild ass, golden monkey, takin, white-lipped deer and other animals more than 10 rare and endangered species, 123, the protection of animals at the national level have nine kinds of 53, two kinds of two 20, in particular, Equus przewalskii expanding population has reached the conditions of release wild.

据了解，甘肃濒危动物研究中心自成立以来已引进和繁育赛加羚羊、普氏野马、野骆驼、野驴、金丝猴、扭角羚、白唇鹿等濒危珍稀动物10余种、123头，拥有国家一级保护动物9种53，二级2种20头，特别是普氏野马种群不断扩大，已基本达到放野条件。

An algorithm base on Pro-ESPRIT and MR-ESPRIT of simultaneous estimation of frequency and 2D AOA with spatial-temporal sub-Nyquist sampling is proposed. The frequency estimation algorithm is suit for arbitrary geometry of antenna array.

提出了基于时空欠采样条件、Pro-ESPRIT方法和多分辨意义下的宽频段入射信号频率和二维到达角估计方法，并指出，其中的频率估计算法适用于任意几何结构阵列。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。