力学

With the development of sports biomechanics, technique applied biomechanical theory to analyze and optimize agonistic motions of sports, as a new interdisciplinary field, have been attached more and more attentions recently.

随着新兴的边缘学科——运动生物力学的迅猛发展，应用生物力学原理诊断运动员的动作技术、优化运动技术作为运动生物力学的主要应用研究课题之一，正在受到越来越多的关注，应用在各项体育领域的运动分析指导系统作为教学与训练的指导工具也备受关注。

In this paper the dynamics characteristics are analyzed theoretically at first. According to the unique configuration and mechanics characteristics, the mechanics model and kinetic differential equation of the half-tracked air-cushion vehicle are established. Algorithm of mechanics and lifting-state parameters are put forward and analyzed. And variation ranges of the driving state parameters are obtained and the corresponding influence factors are analyzed. The further qualitative studies on control model are carried out.

因此，本文首先从理论上分析了半履带式气垫车的动力学特性，根据半履带式气垫车的独特结构和力学特性，建立了半履带式气垫车的力学模型和相应的运动微分方程，提出并分析了在纵摇与升沉运动时，半履带式气垫车的力学参数和垫升状态参数的计算方法，得到了在行驶过程中各运行状态参数的变化规律，并分析了相应的影响因素，进而对控制对象模型进行了定性研究。

Utilizing the approach of the theory of elasticity and mechanics of materials, the plane and antiplane problems of interactions among multiple line inclusions, line inclusion and line crack, and line inclusion and circular inclusion in infinite plane have been studied systematically from the fracture mechanics point of view in this thesis.

本文使用弹性力学与材料力学相结合的方法，对无限平面上多根线夹杂、线夹杂与线裂纹及线夹杂与圆夹杂相互作用的平面与反平面问题，从断裂力学的角度作了系统研究。

The parallel bamboo curtain laminated panels of different grades were manufactured in the laboratory using the mature production technology of bamboo curtain plywood, and the bending and compression properties have been studied respectively.

在不同部位竹材性质测试的基础上，分析了竹材、木材物理力学性质的差异，建立了毛竹的物理力学性质与密度之间关系的拟合方程，并针对将竹壁分成6层等厚竹篾工艺生产的竹篾，根据竹材的抗拉弹性模量分别制定了分4级、3级和2级等3种力学分级方法。

In modern physics research, the calculus of variations has a broad application of law. As a solid mechanics, structural mechanics and computational mechanics of the theoretical foundation, it has important value in theory and practice on the mechanics; Variation method ruled out the perturbation of the restrictions can be widely used in many state-level and the state function in the calculation in the optical; Calculus of variations can be calculated with the parameters, we can guarantee the reliability of the results, can effectively reduce the workload of calculation, It can be said that the applications of calculus of variations are very broad.

在现代的物理学研究中，变分法有着广泛的应用：在力学上，变分法作为固体力学、结构力学及计算力学的理论基础，在理论上和实践上都有重要的价值；在光学上，变分法排除了微扰法的限制，可以广泛应用于诸多定态能级和态函数的计算中；在量子力学的应用中，具有可算出系统的参数，既可以保证计算结果的可靠性，又能有效地减少计算的工作量等的优点，可以说变分法的应用领域十分广阔。

From the perspective of the variational discussion of Lagrange\'s contributions to the principles and analyzation of mechanics,the interaction between the calculus of variations and mechanics,especially the variational principles is made clear.

结合拉格朗日微积分代数化方案和18世纪可积性条件的研究，探讨了拉格朗日关于变分法基础研究的数学背景及相关工作；通过对《分析力学》中静力学约束平衡问题的细致考察，系统探讨了变分法中乘子法则的力学渊源、提出过程及意义。

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 effects of osmosis properties of the cell wall on the mechanical response of the cell were discussed.

在建立植物细胞力学模型的基础上，利用膜理论推导出细胞在压缩载荷作用下的平衡方程，通过数值仿真的方法得到细胞的力学响应，分析了细胞壁的渗透作用对细胞力学响应的影响。

By comparison between equations of motion of geometrical opticsand that of classical statistical mechanics,we find that there should be an analogy between GO and CSM instead of GO and classical mechanics.

本文将几何光学和经典统计力学的运动方程相比较之后，指出几何光学应与经典统计力学具有相似性，而不是与经典力学具有相似性。

The simplified formulas of synthesis mode of stress and strain for complexus theory of geomaterials damage in the condition of isotropic damage are provided.

损伤力学与断裂力学、疲劳分析理论全都属于破坏力学，是研究物质不可逆的破坏过程的科学。

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。