轮

The cyclic symmetric conditions of node points are presented to modify the stiffness and mass matrices of the substructure.With the use of the structural cyclic symmetry and the complex constraint conditions,the eigenvalue ...

这证明复约束法既极大地减少了计算所需内存和机时，又可建立包含轮齿和轮体在内的计算模型，保证了齿轮结构特征值问题计算的完整性和准确性。

According to the correct diagram of water waves,the equation of their carve is obtained, which is a short-range cycloid .

根据水面波的正确图示法，推导出水面波的波形曲线方程是一条短幅旋轮线，这为旋轮线在力学中的应用提供了一个新例证。

The complete model of locomotive and vehicle and the exact motion equations of wheel-set are established, in which, three-dimension wheel/rail contact geometry is taken into account and the Kalker's creep theory is employed to analyze the effects of the contact region of wheel/rail. An iterative procedure of solving wheel/rail creep force is proposed to improve the existed calculating method. Finally, the motion equations of vehicle with 23 DOFs are derived using the D'Alembert principle.

建立了较完善的机车车辆分析模型和较精确的轮对运动方程：考虑三维非线性轮轨接触几何关系，用Kalker蠕滑理论研究了轮轨接触区的蠕滑效应，建立了较为详细的轮对运动方程，提出用迭代法来求解轮轨蠕滑力从而对现有蠕滑力求解方法进行了改进，并采用D′Alembert原理推导了23个自由度车辆的运动方程。

The vehicle loads are considered as rectangular harmonic moving loads,and the analytical solution of the pavement and layered ground interaction is deduced with Lame decomposition theorem of displacement field and Fourier transform method.

首先，考虑车辆荷载的多轮性质，利用三角级数、Fourier变换及叠加原理等方法推导获得了粘弹性地基上连续配筋混凝土路面在多轮荷载作用下的稳态响应解；另外考虑基底剪切阻尼作用，详细分析了荷载参数、路面参数和地基参数对路面动力响应的影响。

Leaves densely verticillate, subverticillate, or decussate, sessile, margin entire; stipules absent. Inflorescences axillary on upper part of branchlets, 1–3-flowered; bracts (2–)4 or 5(or 6), scalelike.

叶密被轮生，近轮生的，或交互对生，无梗，边缘全缘；托叶无花序腋生在小枝上半部分上的，1-3花的；苞片(2-)4或5，鳞片状。

Although many bdelloids live in desiccation-prone habitats, such as ephemeral ponds, there are substantial numbers found in permanently aquatic habitats that are unable to desiccate.

尽管许多轮虫生活在干燥的栖息地，如短时间的小水塘，但是有许多轮虫却生活在不会干涸的多水环境里。

It must be noted that 5,6x30 MARS round was in a sense a direct predecessor to 5,7x28 FN SS90 round, although the latter featured slightly lighter and faster bullet.

必须指出，5，6 x30 MARS的一轮，在某种意义上直接前身，5，7 x28新生力量SS90轮，尽管后者稍轻功能和更快的子弹。

Disciplinary Knight, pull 30 + yards into the fight, start to slow down the freedom to steal, steal basic win, steal security if we do not rely on, hold the first round of the two shield硬拼Austrian gas will be strong for the first round, the fastest of pressure Invincible, the second wake-up call to do after the disappearing trick.

惩戒骑士，拉30+码进战斗，开局减速，偷自由，偷得到基本赢，偷如果不保靠，撑两个盾第一轮硬拼，奥强气定给第一轮，最快化压无敌，第二波唤醒消失做后招。

In the aspect of the force analysis between cycloid disk and pin wheel, a kind of force analysis method of the mesh with initial clearance is put forward in allusion to the teeth profile of the equidistant and radial-moving combining modification, which is more accord with the actual engineering.

该方法主要是从整个传动过程中动态地考虑摆线轮与针齿齿面的受力情况，依据摆线轮与针齿的实际最先接触点的分布区间不同，对不同的等距与移距组合修形方式分别给出了动态受力分析方法，并且在整个传动过程中进行了优化搜寻，从而得出了整个传动过程中的接触力动态变化规律，相对以前的受力分析方法，计算的精度和准确性得到了提高。

With more than three years manufacture practice, we have made the product rules of steel plate for heavily-loaded truck wheel disk completely. Also form the standard of manufacture control for this product. It has been proved that the steel plates for heavily-loaded truck wheel disk can well meet the demands of material for heavily-loaded truck, it will be have a good future.

通过三年多的生产实践，已摸索出完善的载重汽车轮辐用钢板生产工艺制度，并形成相应的生产工艺控制标准，轮辐钢板产品实物质量完全满足载重汽车钢圈制造用材的需要，具有良好的使用前景。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。