粒子运动

Speckle patterns are first preprocessed with homomorphic filter and image threshold....

本文研究结果可为进一步研究激光散斑法测量纳米流体中纳米粒子的运动，以及开发新的动态纳米粒子光测方法提供理论和实验依据。

By virtue of the assumption, in the framework of the classical scattering theory of the interaction between incident particles and a surface, a self-consistent local model for the interaction of atomic oxygen with surface materials on the spacecraft was developed based on the kinetic theory of molecular reaction.

该模型根据入射粒子轰击材料表面的响应强度，将相互作用区域分解为强干扰、边缘及弱干扰等三个区域，分别建立了相应区域的动力学模型方程。为了量化边缘区域粒子的耗散效应，本论文引入估算材料的Debye温度的Lindemann定律，并结合热容理论的Debye模型给出边缘区域分子间阻尼运动的摩擦系数。

When charged particles move in the magnetic field, they will experience an electromagnetic force called Lorentz force which is orthogonal to both the direction of velocity and magnetic field.

当带电的粒子在电磁场中运动时，会感受到电场与磁场的作用力，这个电磁力垂直於粒子的速度以及磁场方向。

In the paper,it has been described the relative nonsymmetry effects of the super nonlinear velocity, time of a particle and its kinetic formulae for the followed body when it moves with high velocity.

粒子超非线性速度、时间的相对不对称性效应和随体动力学公式摘要：描述了粒子作高速运动时的超非线性速度、时间的相对不对称性效应和随体动力学诸公式。

In this kind of long range interaction system, the movement of the particle can be affected by each other.

由于这种长程相互作用的存在，系统中每一个粒子的运动都会受到其它粒子的影响。

For such a large number of particles, to calculate the movement of each particle state is impossible.

对于数量如此之多的粒子，想求出每一个粒子的运动状态是不可能的。

For the weak random case, we introduce the effective particle picture to solve the movement of gap soliton.

对于弱无序系统，体系可以做有效粒子近似，也就是孤子在运动中始终可以当作一个粒子来看待。

By a theoretical model, influences from electron temperature, ion temperature, plasma flow and secondary electron emission are mainly analyzed.

主要讨论了电子温度、离子温度、等离子体流动以及二次电子发射对尘埃带电的影响；数值计算研究了尘埃带电的弛豫时间；在考虑了离子拖拽力作用下，估算了尘埃粒子在聚变装置中的运动速度；针对碳材料的尘埃理论计算得到了粒子的寿命。

The conclusion is drawn through analyze and comparison between the solutions of zero and first order, second and first order that the particle drifts in the vertical direction of the magnetic field and its crosswise gradient in the approximation of first order. While the particle makes superimposed circle movement of uniform velocity in the approximation of second order.

通过分析比较1阶近似解与0阶近似解；2阶近似解与1阶近似解，得出由于1阶近似而引起粒子在与磁场方向以及磁场横向梯度方向垂直的方向发生漂移；由于2阶近似使得粒子在xy平面内做12W、3W、4W、5W、6W叠加的匀速圆周运动。

The spontaneous emulsifications of sodium dodecylbenzene sulfate, dodecane and three-component water system were simulated on the basis of the reasonable selection of particles and definition of interaction parameters between particles.

通过合理划分流体粒子和定义粒子之间相互作用参数，模拟了十二烷基苯磺酸钠、正十二烷和水三组分体系的自发乳化现象；通过附加固壁条件，模拟了在水动力作用下吸附在岩石表面的油珠发生破裂的非自发乳化过程，以及由于表面活性剂在岩石表面吸附而引起的润湿反转现象，比较了润湿反转前后残余油珠的运动情况。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。