查询词典 motion

For the study of Brownian motion established kinetic theory of gases played an important role in the process of .1827, Brown observed that pollen suspended in water such as the random motion of material particles .1877 year, Delta claims that the particles The irregular movement of liquid molecules to its collision-induced .1905 imbalance and later years, Einstein, Langevin Smolukhovski, and they were published on the theory of Brownian motion .1908 year, Perrin Experimental observation of the system, confirmed the correctness of the theory.

对于布朗运动的研究在气体动理论建立的过程中起过重要作用。1827年，布朗观察到悬浮在水中的花粉等物质微粒的无规则运动。1877年，德耳索指出，微粒的不规则运动是液体分子对它的不平衡碰撞引起的。1905年及稍后，爱因斯坦、斯莫卢霍夫斯基和朗之万分别发表了他们关于布朗运动的理论。1908年，佩兰的系统实验观察，证实了上述理论的正确性。

Because of the nonuniqueness in the positional solution, it's not easy to test the performance of the coordinated control system. So the model of NN was built to convert the vector of the length of 6 jars into the vector of the position of the motion deck. It's fast and accurate for the lengthwise direction. The state space system model of the six degree freedom motion simulator was built by the equations of electrodraulic servo mechanism and the multi-body dynamics equation of the six degree freedom motion simulator,the vector of the length of 6 jars was the control variable.

本文结合六自由度运动模拟器的多体动力学方程和电液伺服驱动机构的特性，经简化得出了具有实际意义的六自由度运动模拟器整体系统的状态空间方程式，通过分析该系统的稳定条件和能控性，采用状态反馈对系统的状态方程式进行合理配置，从而建立了以运动模拟器杆长向量为控制变量的运动模拟器整体控制系统，并将该控制系统输出的杆长向量转换为位置向量。

Subsequently describes in detail the method of motion simulation of complete machine and the setting of motion analysis's scheme and the setting of link and the setting of motion drivers of joints.Also discusses the adjustment methods of the working part apa...

同时，详细阐述了整机运动仿真的方法和运动分析方案及连杆和运动副运动驱动的设置；介绍了工作部件距地面高度的调整方法，建立了机具前进速度、工作部件旋转速度与棉株间距之间的关系，为机具的设计提供必要的理论依据。

The experiment results prove that the way with regularization technology is better than the way without regularization technology. In order to overcome the limitation of the regularization method, chapter 6 builds an irregular MRF model suitable for the motion estimation of feature point based on MAP-MRF frame. The energy function, which can reflect the joint probability distribution of motion parameters and the constraints relation of local 3D motion parameters, is established in irregular MRF.

为了解决正则化方法只能分析非刚体局部三维运动的缺点，第6章在基于MAP-MRF的分析框架中建立了与特征点运动估计相对应的非规则MRF模型，构造了非规则MRF模型中反映非刚体局部三维运动参数之间约束关系和运动参数联合概率分布的能量函数，通过能量函数最小化估计运动参数。

And have complicated reasons, and the bad study motion affect the study result deeply; The teacher may enhance the control to the student' s study morion in the class through the valid plan, making the student be placed in the good motion appearance and be stirred up the necessary motion experience, which is the key for the teacher to improve the teaching quantity in the gymnastics class.

深入研究体操课中学生学习情绪，有针对性地对各种情绪予以积极调控，使学生处于良好的情绪状态和激发必要的情绪体验，是提高体操课教学质量的关键，这对当前高校体育教育专业深入实施教育部关于"新世纪高等教育教学改革工程"具有极现实意义。

This method undertakes comparative getting the area between the spare parts to equation of geometry of the face in model of CAD of different spare parts above all - surface contact relation and type, use amount coming back theory general face - the face expresses to be helix; relative to instantaneous motion next, the helix that goes up to many surface contact undertakes making operation,; of helix of the motion when making the opposite very short time between the spare parts is final, according to the spare parts abut concern plan and abut spare parts move relatively helix, undertook an analysis to assembling instantaneous of whole of the spare parts in the model to concern with drive movably, give out not between the method of calculation of helix of opposite instantaneous motion between photograph adjacent spare parts and them but the judgement method of drive sex.

该方法首先对不同零件CAD模型中面几何方程进行比较得到零件之间的面-面接触关系和类型，并应用旋量理论将面-面相对瞬时运动表示为螺旋；然后，对多个面接触上的螺旋进行交运算，生成零件之间的相对瞬时运动螺旋；最后，根据零件邻接关系图和邻接零件相对运动螺旋，对装配模型中零件整体瞬时可动性和驱动关系进行了分析，给出不相邻零件之间的相对瞬时运动螺旋计算方法和它们之间可驱动性的判定方法。

According to Newton's first law of motion a body is in motion but actually never is there a body which remain in motion forever because it is impossible to get rid of extern al influence.

根据牛一定律，运动的物体会一直运动，但实际上决不会有永远保持运动的物体，因为它不可能摆脱外部作用力的影响。

According to Newton's first law of motion a body is in motion but actually never is there a body which will remain in motion forever because it is impossible to get rid of external influence.

根据牛顿第一运动定律，动者恒动，但实际上绝不会有永远保持运动的物体，因为它不可能摆脱外部作用力的影响。这是一个并列句，由but连接。

This make it difficult to know the essence of fluidized beds. In order to viewthe motion behavior of a single particle in a fluidized bed in a reasonable cost, thegas-solid flow in a fluidized bed is modeled by a combined approach of discrete particlemethod and computational fluid dynamics, in which the motion ofindividual Particles is obtained by solving Newton\'s second law of motion and gas flowby the Navier-Stokes equation based on the concept of local average.

为了用数值模拟方法来弥补传统实验方法的不足，达到从单个颗粒的尺度上来研究流化床中颗粒的运动和气体流场的剧烈变化情况的目的，本论文建立了基于用Newton第二定律计算单个颗粒运动轨迹的离散颗粒法和基于区域平均值的计算流体动力学方法的数学模型的建立和求解过程；并依据Newton第三定律建立了DPM模型和CFD模型的耦合模型，编写和调试了DPM和CFD的耦合程序。

Upon to Ljapunov's concept of motion stability, the dynamic instability should be understood as the existence of at least one perturbed motion, which is initially in the small neighbourhood of the undisturbed motion and which starts at t =t〓, when is singular for the first time, depart monotonically from the neighbourhood, this phenomenon is proposed to be referred to as the quasi-bifurcation phenomenon.

按J〓运动稳定性概念，动力失稳应理解为在基本运动的小邻域内至少存在一种干扰运动会偏离基本运动并单调增长，偏离发生在时刻t=t〓，此时切线刚度矩阵奇异。这是所谓准分叉现象。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。