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。
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。
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