方法

As an alternative approach, cut cell methods have become popular, because they have the simplicity and accuracy of the Cartesian coordinates for internal cells, and a more elaborate method only for the boundary surfaces.

作为一个替代方法，降低细胞的方法，已成为热门，因为他们的简便性和准确性的笛卡尔坐标内部细胞，以及更详细的方法不仅对边界表面。

So we can only plan trajectory in Cartesian, but planning trajectory in Cartesian space is more complex than in joint space. Third, a new method of analyzing kinematics of space robot was described.

因此我们只能用笛卡尔空间轨迹规划方法对其进行规划，而传统的笛卡尔空间轨迹规划方法相对于关节空间轨迹规划方法要复杂的得多。

The algorithm GS to solve the problem of inverse dynamics based on the optimal theory is proposed, by using the numerical methods of Gill and shooting target, the optimal joint driven torques are obtained With the smooth joint trajectory motion, a fast and stable inverse dynamics method is proposed, it provides a new effective way to control the flexible manipulator The trajectory planning in the joint space and Cartesian coordinates is especially discussed In terms of kinematics of space flexible link manipulators, a sequential integration method for inverse dynamic analysis of flexible manipulators is developed The concrete results of simulations tested and verified the validity of proposed methods, and some valuable conclusions are achieved.

提出了求解基于最优理论的柔性臂逆动力学问题的GS法(Gill—Shooting method)，得到了柔性臂关节的最优驱动力矩；提出了基于光滑关节运动轨迹的柔性臂逆动力学的快速稳定方法，为柔性臂控制提供了一条新的途径；探讨了关节空间和直角坐标空间柔性臂的轨迹规划问题；研究并完善了结合柔性臂运动学的顺序积分的逆动力学方法。通过具体实例的仿真研究，验证了所提出的柔性臂逆动力学方法的有效性，得出了一些很有价值的结论。

A direct method is implemented for computing the free-term coefficient and the Cauchy principal value integral in the higher-order boundary element method for potential flow.

采用直接数值计算方法计算了势流问题高阶边界元方法中的自由项系数和柯西主值积分，建立了波浪与结构物作用的一种高阶边界元方法。

Then the boundary element integral equation of interior and exterior form is deduced in detail, also the form with corner coefficient. The significance for numerical calculation and principle of the singular integral is analyzed, and a non-isoparametric transformation method is presented to calculate weak singular integral and Cauchy integral, the method presented provides us a very simple way to computer the two kinds of singular integral of Helmholtz boundary integral equation, and it is easy to program in computer. After the difficulty of the calculation for multi-frequency of Helmholtz boundary element is explained, a method named SECHIEF (Series Expansion Combined Helmholtz Integral Equation Formulation), which is focused on the computational efficiency, is presented.

对结构声辐射的边界积分方程的内部形式与外部形式进行了详细的推导，给出了角点系数的计算方法与边界积分方程的形式，在此基础上，分析了奇异积分产生的原理及其对数值计算的重要性，提出了一种计算奇异积分的非等参(来源：Ae8a8BC论文网www.abclunwen.com)单元的变换方法，该方法给Helmholtz 声学边界积分方程中的弱奇异积分与Cauchy 奇异积分的计算以及编程提供了极大便利。

Therefore,based on microwave highQ cavity resonator,a new technique of calculating the quality factor through theoretical derivation is presented,which allows flexibility in choice of measurement point.This method solves the problem of coupling system influence,which can cause larger error in measuring.

为此，针对微波高Q谐振腔，给出了一种测量其品质因数的新方法，该方法可以根据实测的谐振曲线灵活选取测量点，有效解决了传统方法中由于谐振腔受外电路影响导致测量误差较大的问题。

Since the 19th century, classical celestial mechanics system and the formation of planets and the moon Sports theory has become a complete theory of .19 century to the 20th century, 50 years is the period of modern celestial mechanics, improved analytical methods, additional qualitative methods and numerical methods .50 years after the study of celestial mechanics celestial object from the solar system be extended to man-made objects Movement Theory, as well as a few star systems, broadening the field of study.

此后到19世纪末，经典天体力学体系形成，大行星和月球运动理论已成为完善的理论。19世纪末到20世纪50年代是近代天体力学时期，改进了分析方法，新增加了定性方法和数值方法。50年代以后，天体力学的研究对象从太阳系天体扩展到人造天体运动理论以及为数不多的恒星系统，拓宽了研究领域。

The finite element numerical method based on centimo theory and dispart-insert-value One side ,it is conventional energy method. It is transfiguration of Ritz-Galerkin method .

在求解非线性波动方程时，有限元方法通过剖分插值构造有限维子空间SN的基函数的方法保持了古典Ritz-Galerkin方法的优点，克服了它的不足。

Among them,CsCl density gradient centrifugation is often used,because product purity is good by this method.

在纯化病毒的方法中，氯化铯密度梯度离心法是较为常用的方法之一，方法简便易行，获得的病毒样品较纯。

EXPERIMENTAL STUDY ON THE INFLUENCE OF PROCESSING ON THE MECHANICAL PROPERTIES OF ENGINEERING CERAMICS Fan Ning Ai Xing Deng Jianxing Wang Yixing (Shandong University of Technology) Abrstract The mechanical properties of engineering ceramic are impacted by itself and its surface status.

加工方法对工程陶瓷力的影响摘要工程陶瓷的力学性能受材料本体和表面状况的共同影响。加工方法对材料的表面状况有较大的影响，因此，陶瓷材料的力学性能也受加工方法的影响深圳陶瓷加工工业陶瓷加工

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。