运动的

Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.

首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。

The correlogram of CEF and OLR and the composite chart of 850hPa wind field while CEF is stronge...

结果表明，夏季海洋大陆赤道缓冲区的对流上升运动(90°E～120°E，5°N～5°S)、澳州大陆冷性高压(10°S～30°S，120°E～155°E)的发展，都影响2～3候以后105°E夏季越赤道气流；澳洲大陆北部的冷性高压，西太平洋副热带高压西端位置西伸或东缩造成的东中国海季风区上升运动的变化，又是南北半球环流同时影响CEF变化的具体表现。

Produce social fair covalence to be worth, it is the inherent power that socialistic society production moves, also be the way that socialistic labor organization produces, it drives the move, direction that indicating all socialism labor, in all socialism labor organization manufactures an activity central position is held in complex connection, it is the objective a home to return to with socialist economy only movement.

生产社会公共价值，是社会主义社会生产运动的内在动力，也是社会主义劳动组织生产的方向，它推动着、指示着全部社会主义劳动的方向，在所有社会主义劳动组织生产活动复杂的联系里占据中心位置，它是社会主义经济运动唯一的客观归宿。

This article applies the simplified differential coefficient equation on rising-sinking and swinging movement of high-speed sliding body model in the static water. The paper presents a method of theoretical prediction for the movement of high-speed planning hulls with a constant dead rise angle in regular waves.

应用简化了的高速滑行体模型在静水中滑行的升沉和纵摇运动的微分方程，提供了对不变侧缘角的高速滑行体在规则波浪中运动的动力分析方法。

Then the FLUENT software was used to simulate the amphibious vehicle' ambient flow field through defining the unsteady boundary condition. The lift, resistance, velocity, pressure, and wave of the amphibious vehicle moving in the regular waves were obtained, which can avoid the errors resulted from neglecting the free surface and provides theoretic basis for the research on optimization design of high performance amphibious vehicle.

在计算出某改进型两栖车在微幅规则波中高速迎浪运动时升沉和纵摇特性的基础上，运用FLUENT软件，通过自定义非定常入口边界实现了两栖车在微幅规则波中运动的三维流场数值模拟，得到了升力、阻力、速度、压强和兴波等流场参数，实现了两栖车在波浪中的绕流场数值模拟，解决了以往由于忽略兴波特性导致数值计算结果随航速提高误差不断增大的问题，为高性能两栖车的外形设计研究提供了理论依据。

The general forms of the conservation of momentum, t emperature and potential vorticity of coastal ocean are obtained in the xz pla ne for the nonlinear ocean circulation of Boussinesq fluid, and a elliptic type partial differential equations of second order are derived. Solution of the part ial differential equations are obtained under the conditions that the fluid move s along the topography.

在考虑了陆架地形后，在垂直海岸的xz剖面上，对Boussinesq流体的非线性海洋运动方程求得了总动量守恒、温度守恒和位势涡度守恒的普适形式，进而得到流函数所满足的椭圆型二阶偏微分方程，在给定流体沿地形运动的条件下，算出问题的解。

The critical rate equation of the particles engulfment is drawn on the bases of thermodynamic conditions and relative movement of the particles against the interface.

基于两相流原理，给出了粒子进入熔体的临界条件，定量描述了考虑粒子浓度时粒子在熔体中的运动速度，建立了粒子俘获/推移的热力学条件，并在热力学条件及粒子相对于固-液界面运动的基础上，建立了粒子俘获的临界速度判据。

The time, monetary resources and manpower that have been poured in allow the fencing master to occupy a space in the arena of the fencing sport, yet a shred of imperfection still exists due to the lack of extraordinary results out of international matches that continues driving him to promote the fencing sport – the fencing master's life of fencing sport is thus constructed with the said involvement and imperfect sense of achievement.

他所投入的时间、金钱与人力，使得剑侠在击剑运动场域占有一席之地，但由於国际赛尚未有佳绩出现，这样的成就仍带有些许的不完满，这也成为剑侠持续推展击剑运动的动力来源。剑侠的击剑运动生涯，就在投入与不完美的成就感中所构筑而成。

He picked up the sport after training as an Army marksman and won a silver in Athens, but that feat didn't change India's long history of indifference to sports other than cricket and field hockey games against Pakistan.

他在军中曾参加神枪手的训练，并从此从事了这项运动，继而获得了雅典的银牌。但这个胜利并没有改变印度人对除了与巴基斯坦对着干的板球和曲棍球之外的运动的漠视。

The apparatus for converting side-to-side to rotational motion for a workpiece includes a spring assembly with a movable base mounting element which is driven in a slightly arcuate reciprocal side-to-side motion and a fixed mounting element spaced apart from the base element and mounted in the appliance so that it does not rotate or move in operation of the apparatus.

一种将工作件的侧向运动转换为旋转运动的装置，包括弹性组件，带有作微小弧线往复侧向移动的可移动的基体固定件，和与基体件间隔开的固定的固定件，其固定在器具上在器具操作时不会转动或移动。

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。