The southern part of the particle cloud, or solar wind, grazed Earth's magnetic field on the 14th and 15th, resulting in a particularly good night for aurorae.
这些带电粒子形成的粒子云（又叫太阳风）在14和15日掠过地球磁场，造就了观察北极光的美妙时刻。
The spacecraft will be equipped with various instruments, among them a solar wind particle detector, a 3d camera, and a device to measure the magnetic field.
探测器将配备各种的装置，其中包括一个太阳风粒子检测器、一台三维摄像机以及一台测量磁场强度的设备。
The reason of the strengthening of severe wind belt of low layer is due to the dynamicforce effect of upper layer jet and the transport effect of air particle of low latitude.
低空强风带的加强一方面由于高空急流的动力强迫作用，另一方面来源于低纬空气质点对强风动量的输送作用。
It is found that the collision times between filter particles and dust particles change with the particle size when the wind velocity is same.
模拟计算了在同一风速下碰撞次数与粉尘粒径以及移动层颗粒径之间的关系。
It was found that the collision times between filter particle and dust particle change with the particle size when the wind velocity is same.
模拟计算了在同一风速下碰撞次数与粉尘粒径以及移动层颗粒粒径之间的关系。
Second, a simple wind that impacts the dispersion of smoke is simulated using OGRE particle system affecter.
其次，利用OGRE粒子系统效果器，模拟了简单风场对烟幕扩散的影响；
Particle Animators move your particles over time, you use them to apply wind, drag & color cycling to your particle systems.
粒子动画器随着时间移动你的粒子，使用它们应用风、拖放和颜色循环到你的粒子系统（什么意思啊）。
In the method particle trajectory model of certain aviation bomb is chosen, drag law by the numerical simulation based on the virtual wind-tunnel is adopted.
该方法选用航空炸弹质点弹道模型，采用虚拟风洞数值模拟得到的炸弹阻力定律，结合实弹靶试数据，对弹道系数进行了符合计算。
The residence time can be defined according to rotational speed of the rotary dryer, radius of the drum, the slope of the drum, wind-force and the particle quality.
在考虑了转筒转速、转筒半径、转筒倾角、风力大小、物料颗粒的质量等因素之后，可以模拟物料颗粒在转筒内的滞留时间。
In this paper, the variations in the horizontal and vertical velocities over 6 different transverse dune models are investigated in a wind tunnel by applying the particle image velocimetry (PIV).
通过风洞实验的方法，针对不同形态的6组横向沙丘模型，采用粒子图像测速系统，测量了模型沙丘周围气流水平速度和垂直速度的变化规律。
When the weight of the particle can resist the resistance of the wind, it is discharged from the outlet, thus it ensures the accuracy of the particle size.
颗粒重量达到能克服出料口的进风阻力时，就从出料口排出，确保颗粒度的准确性。
More vegetation covers make the soil particle finer in sand land, but the perennial herbage decrease the wind erosion less than shrub.
沙生植被的增加会显著增加土壤中细粒物质的含量，但多年生草本对风蚀的减缓作用低于灌木；
The high particle transportation area is located in the downwind area and the migration amount decreases with the wind velocity.
颗粒物向庭院房间的迁移主要集中在风向下游房间，迁移量随背景风速的增大而减小。
Particle Image Velocimetry (PIV) Measurements were carried out on a 2-d flow field around the greenhouse in the atmospheric boundary layer wind tunnel.
在大气边界层风洞中，利用粒子图像速度场仪(PIV)对风绕过二维温室的流动进行了流场测量。
The numerical results indicate that courtyards can effectively reduce its interior wind velocity and particle concentration;
研究结果表明，背景气流掠过庭院式建筑，其内部风速和颗粒物浓度可有效降低。
Defect on air pressure vessel materials of high speed wind tunnel resource was inspected by means of ultrasonic radiographic and magnetic particle.
对高速风洞气源气罐全厚材料用超声、磁粉、射线等方法进行了缺陷检测。
Defect on air pressure vessel materials of high speed wind tunnel resource was inspected by means of ultrasonic radiographic and magnetic particle.
对高速风洞气源气罐全厚材料用超声、磁粉、射线等方法进行了缺陷检测。
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