粒子运动

An alien-like squid with "elbows" is caught on video, the world's biggest atom smasher fires up, and unknown "structures" are detected tugging at our universe, and more.

一条被摄像机拍到的酷似外星人的用"肘"运动的乌贼，世界最大的粒子加速器开始工作，未知"结构"被发现牵引我们的宇宙，等等。

We discuss the special case of motion in a plane, because of the angular momentum per unit mass, a, the spinning particles in Kerr spacetime is different form the case in Schwarzschild spacetime.

主要讨论在赤道平面的特殊情况，由于场源具有角动量，自旋粒子在Kerr场中的运动不同于史瓦西场中的情况。

The apparent motion is sinusoidal with a wavelength proportional to the distance between the orbits of the satellite and the particle.

这个规律的周期运动，其波长会与粒子和卫星轨道之间的距离成正比。

The energy eigenfunc-tions which can describe correctly the motion of the free particlein phase space have been established through the introductionof an modified Gaussian function with an arbitrary parameter.

通过引入一个含有任意参数的Gaussian型修正函数，确立了能够正确描述自由粒子在相空间中运动的本征函数。

Finally, a stochastic averaging method based on generalized harmonic functions has been introduced and applied to the study of dynamics of Brownian particles.

最后，本文介绍了一种基于广义谐和函数的随机平均法，并将它初步应用于受宽带噪声激励下的Brown粒子随机运动系统的研究。

In the research on target tracking, lots of experimental results illustrated that the particle filter algorithm is imperfect to the moving target of which the trajectory changes complexly.

在目标跟踪研究中，大量的实验证明粒子滤波算法对于运动轨迹变化复杂的运动目标跟踪效果不理想。

To investigate a nonplanar stellar motion deviating from the planar one, we approximately consider the motion as a bi-dimensional harmonic oscillator perturbed by higher order terms, so we obtain Henon-Heiles potential, which is nonintegrable.

为了研究试验粒子偏离赤道平面的运动，把整个运动近似地看成受到高阶微扰的二维谐振子，这时系统有不可积的Henon-Heiles势函数。

In the high efficiency oil removal technology aspect, the theory study and application experiment of air sparged liquid-liquid hydrocyclone was carried out, enlightened by the air sparged solid-liquid hydrocyclone. Firstly, the strength and movement of dispersed phase was analyzed in theory, it was proved that the air bubble-oil drop polymer trend to move to the axes of hydrocyclone. Secondly, using CFD method, the characteristics of oil-air-water flow field were studied, including velocity distribution, pressure distribution, turbulent motion energy and its dissipation distribution. The characteristics and separation effect under different air injection methods were simulated. Thirdly, the separation ex-periment of air sparged liquid-liquid hydrocyclone was carried out at Lab. The major structure parameters of the hydrocyclone were optimized, the reasonable air injection method and performance parameters were determined through 4 groups of air injection experiments.

首先，对气携旋流场中分散相粒子的受力及运动进行了理论分析，证明了气泡与油滴形成的聚合体，更易于向轴心运动；其次，应用CFD方法，研究了油-气-水三相流场的速度分布、压力分布、湍动能及其耗散率分布特性，对不同注气方式的流场特性及分离效果进行了数值模拟；第三，开展了气携液-液旋流分离特性室内研究，优化了旋流器的主要结构参数，对四种注气方式的分离效率进行了对比，确定了合理的注气方式和操作参数；最后，在油田现场开展了处理聚驱采出污水工艺试验，确定了工艺运行参数，评价了处理效果。

This paper superimposes the impact of the wind on the flame's basic trajectory to simulate the surface movement.While ensuring the consistency and continuity of the flame texture,it reduces the number of particles to enhance real-time rendering.Besides,the fidelity of simulation and adaptability under different scenarios are enhanced by implementing the artificial control on the parameters of the wind.

将不受风力时的火焰基本运动轨迹和风力影响相叠加，来模拟多风影响下火焰表面的运动，在保证动态火焰纹理一致性和连续性的同时，减少粒子数量，提高渲染实时性，并实现了风的参数的人为控制，增强了模拟效果的逼真度和在不同场景下的适应性。

In order to forecast and simulate reasonably the behavior of oil spill, the thesis presents a progressive simulation method based on"oil particle"method, namely, dividing the oil spill behavior into self-expansion and turbulent current expansion, then using different numerical methods to simulate and forecast.

为合理地预测模拟溢油的行为动态，本文在&油粒子&模式的基础上提出了溢油运动的分阶段模拟法，即将溢油运动过程分为自身扩展和湍流扩散两个阶段，分别用不同的数值方法进行模拟预测。

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。