查询词典 dissipative force

Here we have discussed the Casimir force of Maxwell-Chern-Simons gauge field and obtained the new results, namely the contribution of force of M-C-S gauge field to the Casimir force zero temperature, the radiative correction to the Casimir force of M-C-S gauge field at zero temperature and Casimir force of M-C-S gauge field at finite temperature between two parallel ideal conducting wires.

本文讨论了两个平行的，理想的金属线之间Maxwell-Chern-Simons规范场的Casimir效应。不仅得到了绝对温度下自由的M-C-S规范场对Casimir力的贡献，而且得到绝对温度下M-C-S规范场的真空涨落对Casimir力的辐射修正以及温度对M-C-S规范场的Casimir力的修正，并且分别考虑了无质量极限，低质量极限和高质量极限情况。

Consulting the existed classified methods of rural surplus labor force and my understanding of circumfluence and non-return labor force, this article divides rural surplus labor force into two parts, which are native non-return rural surplus labor force and allochthonous non-return rural surplus labor force.

文章借鉴已有的农村剩余劳动力分类方法，并结合自己对回流与非回流劳动力的理解，将农村剩余劳动力分为两类，一类为异地非回流劳动力，一类为本地非回流劳动力。

LONDON - Eastern military - said the Chinese air force training in foreign countries lags behind the urgent need for new higher education machine - air force fighter trainer training Bidar PAKFA Air Force Air Force Air Force Base Education Training aircraft training system.

东方网-东方军事-外国称中国空军训练水平落后迫切需要新高教机-教练机空军战机空军飞机空军训练Bidar PAKFA 训练方法空军基地高教机训练系统。

The method divides block along the intersection edge of joint faces and neglects the vertical shear force between dividing-blocks i.e. takes horizontal normal force and shear force into account; as to an assumed sliding direction, by satisfying vertical force equilibrium of every dividing-block and whole force equilibrium in the sliding direction, the factor of stability can be solved.

基于此，提出分块极限平衡分析法，该方法沿非临空面交棱将块体进行分块，在忽略分块间的垂向剪力（即可考虑分块间的水平法向力和剪切力）前提下，通过满足各分块的垂向力平衡和滑动方向上的总体力平衡，求解特定滑动方向的稳定系数。

In addition, the blank holding force that is required to avoid wrinkle and rupture during conical part deep drawing is researched. The necessity of reasonable blank holding force in pressing is expounded. From the view of mechanical analysis, the wrinkle critical condition of side-wall is derived for the first time by the stress state of side-wall, the main deformation region on blank. According to the critical condition of plastic instability for flange, side--wall, corner of punch on blank, The blank holding force in conical part deep drawing is divided into four different regions within its forming figure. The basic principle of reasonable blank holding force during stamping is summarized and provided. The mathematical model of reasonable blank holding force that avoids the wrinkle and rupture is established and verified by the finite element numerical simulation and the grid experiment method. The result shows that it is accurate and reliable.

此外，本文还研究了圆锥形件拉深成形过程中，随着拉深变形过程的进行，毛坯为避免产生起皱、破坏缺陷而对压边力的需求情况，阐明了圆锥形件拉深成形过程中压边力合理变化的必要性；由毛坯主要变形区悬空锥壁部分的受力变形情况，从力学分析的角度，首次推导得出了圆锥形零件悬空锥壁起皱失稳的临界条件；并根据主要变形区法兰、悬空锥壁及凸模圆角部分的塑性失稳临界条件，在其成形范围图中，将圆锥形件成形过程中的压边力划分为四个区域；总结并提出了圆锥形件成形过程中压边力合理变化的基本原则；建立了防止起皱、破坏缺陷产生的压边力合理变化的数学模式，并得到了有限元数值模拟及网格实验法的验证，证实了理论分析结果的正确性和可靠性。

A dissipative force is one where the total energy of a system decreases when an object is in motion .

值得注意的是：这里为物体引入质量的概念是为了对应牛顿第二定律并减少误差。

Using the adiabatic approximation, the expression of the mean dissipative force are acquired.

利用绝热近似，给出了平均辐射压力的表达式。

We overcome the previous drawbacks because one of the most important improvements is that we introduce a dissipative viscous force to simulate the effect of collision between gas clouds.

我们的结果同观测符合得很好，克服了以往研究中的缺憾(如环不稳定，位置不准确等)，主要的原因是由于我们引进了一个粘滞耗散过程来描述气体粒子之间的非弹性碰撞。

The simulated results indicate that the properties of the chaotic dynamic system are sensitive to the driven frequency. A threshold value of amplitude exists for the appearance of chaos phase. The system is insensitive to the dissipative magnetic force.

数值模拟结果表明：混沌实验摆系统动力学性质灵敏地依赖于策动频率值；系统策动振幅必须大于一定阈值是混沌相出现的必要条件；磁阻尼参数对系统混沌相动力学状态影响不明显。

Computational fluid dynamics method was utilized to the fiowfield numerical simulation of ultrafine stirred mill, the flowfield characters(velocity gradient, shear rate dispersion of flowfield and the dissipative force of viscosity and so on) of three kinds of stirrer(disc type, stick type and spiral type) were analyzed.

利用计算流体力学方法对超细搅拌磨机进行了流场仿真数值模拟，分析了盘式、棒式、螺旋式三种搅拌器的流场特性(速度梯度、流场的剪切率分布和粘性耗散率等)。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。