查询词典 perpetual motion

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。

As for 60 patients with MV, 45 suffered from motion sckness; 20 were sensitive to motion; 32 had photophobia and phonophobia; 45 had migraine ; 16 had abnormal ocular motion function; 3 had abnormal cerebral MRI and 40 had abnormal results in high stimulating rate ABR.

结果：64例PCIV患者，血压异常29例；血脂或血糖异常14例；血管超声异常37例；突然起身眼前发黑或头晕14例；高刺激ABR异常22例；4例头颅MRI异常。60例MV患者，运动病45例，运动敏感20例，畏光或畏声32例，偏头痛45例，眼动异常16例，MRI异常3例，高刺激ABR异常40例。

A projection on a machine part, such as a pawl for controlling the motion of a ratchet wheel in a watch escapement, that engages the teeth of a ratchet wheel to convert reciprocating motion to rotary motion or vice versa.

棘爪机器部件上的一个突出部分，例如在一个观察棘轮装置中控制棘轮运转的棘爪，用来衔接棘轮的齿，以将往复运动转换为旋转运动；反之亦然

A projection on a machine part,such as a pawl for controlling the motion of a ratchet wheel in a watch escapement,that engages the teeth of a ratchet wheel to convert reciprocating motion to rotary motion or vice versa.

棘爪机器部件上的一个突出部分，例如在一个观察棘轮装置中控制棘轮运转的棘爪，用来衔接棘轮的齿，以将往复运动转换为旋转运动；反之亦然到中国译典经典版本中查找关于pawl的最新解释和例句。。。。

While the frequency can be as high as N when the particle motion is vertical, it cannot be lower than the Coriolis frequency f. In this limit, the particle motion is horizontal in 'inertial' circles, expressing the tendency for steady rectilinear motion with respect to a nonrotating reference frame.

虽然频率可高达为N时，粒子的运动是垂直的，它不能低于科氏频率楼在此限制，粒子议案是水平在'惯性'界，表达为稳定直线运动的趋势关于一nonrotating参照系。

It, thereby, results in imaging degrading, and engenders blurring imaging. The paper analyses a real process about image blurred as a result of object motion, reveals an intrinsical cause about image-degraded owing to object motion, and establishes blurring-model by which one dimension and two dimensions uniform velocity rectilinear motion result in image blurred abide.

为了有效地恢复运动模糊图像，从像素运动的角度分析了因运动造成的图像模糊的实际过程，并首先揭示了运动造成图像降质的内在原因，然后根据模糊图像像素间的关系建立了一维和二维由匀速直线运动所造成的模糊图像的模糊模型，并依据图像降质过程的逆过程推导出恢复模型。

It is shown that two-component Wadati-Konno-Ichikawa equation, i.e. a generalization of the wellknown WKI equation is obtained from the motion of space curves in Euclidean geometry, and it is exactly a system for the graph of the curves when the curve motion is governed by the two-component modified Korteweg-de Vries flow. At the same time, a n-component generalization to the WKI equation is obtained. Also, starting from the motion of curves, mKdV and its symmetry recursion operator is exhibited explicitly; two- and n-component mKdV systems are obtained. It is shown that WKI systems are gauge equivalent to mKdV systems. The two-component WKI equation admits an infinity number of conservation laws and a recursion formula for the conserved densities is given by considering an eigenvalue problem together with introducing an appropriate transformation.

在二维和三维欧氏空间上，我们从空间曲线运动出发，推导出了mKdV方程以及它的用以生成高阶对称的递归算子；推导出了多元mKdV方程以及二元和多元WKI方程，并证明了WKI系统和mKdV系统的规范等价性；尔后，通过考虑特征值问题，并引入一个恰当变换，给出了二元WKI方程的用以计算无穷多守恒密度的递归公式，从而证明了二元WKI方程的守恒可积性；系统地分析了两种mKdV方程的Painleve性质，并分别给出了两种不同形式的二元和n元mKdV方程的共振点出现的规律。

Capital accumulates the motion curve that is market economy, unemployed population is the inevitable result that capital accumulates, the work population motion curve that also is market economy at the same time; Allocate be market economy to allocate the rule by element function, polarization of the rich and the poor is the inevitable result that allocates regular action by element; Inflation is the motion curve of market price case and money.

资本积累是市场经济的运动规律，失业人口是资本积累的必然产物，同时也是市场经济的劳动人口运动规律；按要素功能分配是市场经济的分配规律，贫富两极分化则是按要素分配规律作用的必然产物；通货膨胀是市场价格和货币的运动规律。

That is mainly because the estimation of rotational motion is quite difficult. On the other hand, current image motion model is nonlinear which is very hard to be solved. Thus linear approximation is often made with the premise that the rotational motion is minor.

目前的稳像技术存在的难点包括：首先对于旋转情况较严重的情况稳定比较困难，这一方面是由于旋转的运动估计比较困难，另一方面在补偿的过程中二维的运动模型是非线性的，求解时需要以旋转情况不严重为假设进行线性近似。

Mazur would spot them later at base camp, speaking English very well.

然而后来在营地他们被Mazur认出，发现他们英语说得很好。

"Leaders at the Commonwealth Heads of Government meeting in Australia had little knowledge that when shaking the prime minister's hand they were inches away from the nude."

"英联邦国家的首脑们可能根本就不知道，当他们与首相握手时，他们离那位裸体美女只有几英寸远而已。"