动力学的

Based on the early works, the C program language and the least square method were used to obtain the thermal viscoplastic constitutive equation.A mechanical thermal coupled model was created and DEFORM-2D was used to analyze the thermal and mechanical parameters' changing during the process of adiabatic shearing.

我们在所作的前期工作及国内外的研究成果的基础上，应用C语言程序实现了最小二乘法拟合热一粘塑性本构方程中待定参数的求解过程；在此基础上应用DEFORM 2D 有限元分析系统对，Ti-6A1-4V绝热剪切过程中的热一力变化历史进行了分析；在数值模拟结果的基础上，进行了再结晶动力学的分析与计算。

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

The study of dynamic interactions of foundations and grounds on half space has been the focus on the mechanics and engineering fields. It is of great value to the development of the elastodynamics and is very helpful to the analysis and design of foundations subjected to dynamic loads, such as vibrating machines and seismic waves.

半空间地基与基础的动力相互作用问题的研究一直受到力学界和工程界的关注，它不仅对于弹性动力学的发展有着重要的学术价值，而且对机器基础及地震荷载作用下基础的分析与设计具有重要的指导意义。

In this paper,the relation between the thermal endu- rance of insulation and the exposure temperature is analyzed from the point of view of chemical dynamics.

本文从化学动力学的观点分析了各种情况下绝缘的热老化寿命与温度的关系，通过二种绝缘漆的热老化试验研究了温度、热冲击、潮湿对热老化寿命的影响，并在涤纶薄膜的热老化过程中测定了电性与机械性能的变化。

In order to research the overall dynamic performance of the robot,firstly,a overall structural design of the robot is carried out,and a 3D model of the 5-Dof robot is established in the Pro/E environment,then a three dimensional dynamic simulation research of the kinematics and dynamics is carried out using the ADAMS software,finally the rationality of the system design is discussed as well as the significance in the practical application according to the output results,which have been measured in the simul...

为了研究机器人的总体动态性能，首先进行了机器人的总体结构设计，并在 Pro/E环境下建立了五自由度机器人3D机械装配模型，运用ADAMS软件对其进行了运动动力学的三维动态仿真研究，最后根据测量输出结果讨论了系统设计的合理性以及在实际应用中的意义。对机器人的后续研究，这些研究成果具有一定的参考价值。

We conclude that KB-R7843 has protective effects on contrast media-induced nephrotoxicity. The protective role of KB-R7943 may be related to its positive effects on renal hemadynamics through inhibiting the increase of ET-1 and TXA2 induced by contrast media in the environment of hypercholesterolemia and its cytoprotective influence on renal cells.

据此推导：（1）KB-R7943对高胆固醇血症环境下造影剂注射所致的肾损害有保护作用；（2）KB-R7943对造影剂肾损害的保护作用可能与其阻止高胆固醇血症环境下造影剂注射所致的肾皮质ET-1、TXA2浓度的上升从而阻止高胆固醇血症环境下注射造影剂所致的肾血流动力学的紊乱有关以及其对肾脏细胞的细胞保护作用有关。

The opening of leptomeningeal anastomoses vessel is the important way of collateral circulation in cases of serious stenosis or occlusion of MCA,the collateral flow between MCA and ACA is dominant. The RVACA/RVPCA can reflect the hemodynamic changes、the state of leptomeningeal anastomoses vessel when the MCA was serious stenosis or occlusion; There was a inverse correlation negative correlation between the RVACA/RVPCA and the NIHSS.

⑴在MCA中度以上狭窄或闭塞的情况下，皮质软脑膜吻合血管开放成为侧支循环的主要途径，以MCA-ACA之间的代偿为主；⑵RVACA和RVPCA在一定程度上可以反映MCA狭窄或闭塞时颅内血流动力学的改变、软脑膜侧支吻合的功能状况及有效程度；⑶RVACA和RVPCA与患者的NIHSS评分呈负相关，RVACA和RVPCA值越高的患者，其神经功能缺损程度越轻。

We also analyzed the result of simplified model which removed the materialized block. It shows that result of SD model is credible; way of partitional modeling is propitious to the simplification and upgrade of model, reduction of the amount of calculation, and increase of calculation speed.

根据其特性，对取消物化子系统的简化模型的模拟结果进行分析，表明根据不同的研究目的，选择合适的模型结构是必要的，采用系统动力学的分块建模方法有利于模型的简化与升级、减少计算量、提高模型的计算速度。

And introduces some high-level modules and new-types of animators, the working process and personalistic operation of MAYA.

阐述了数码动画软件MAYA的神奇功能，包括角色动画的逼真再现、粒子系统和动力学的强大展现，介绍了MAYA的高级模块及其新型强力的制作工具，MAYA的工作流程与个性化的操作。

Lund concept-to decrease the intracranial volume by the way of promoting the re-absorption of interstitial fluid in blood capillary bed-has been systematically studied too. But the investigation about cerebral vein system-the biggest blood storeroom-was less reported to review relative literatures. We carried out the pilot experiments to describe brain bridging veins in porcine and underlaid deeper research about human brain bridging veins by initially approaching possible ICP regulation mechanism.

动脉血容量反映了脑组织的灌注，在一定范围内自动调节维持颅内压的平衡，在此调节机制中发挥作用的动脉血流动力学的改变也已被深入的研究和描述，通过促进毛细血管对组织间液的重吸收进而减少颅内容物体积的&Lund&概念也得到较深入的研究，而涉及颅内最大的血液贮存库-脑静脉系统的研究较少，文献报道也较少。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。