The charge exchange and elastic collision between ion and neutral atoms and the collection and Coulomb scattering of ion on dust grains are considered.
当离子在鞘层运动时，考虑离子与中性原子之间的电荷交换和弹性碰撞，以及离子被尘粒的库仑散射和收集作用。
The students exchange and discuss their knowledge in the forms of visits and symposiums and get penetrating and correct judgment through collision of ideas.
学员以参观，座谈形式进行交流探讨，思想碰撞而获得真知灼见。
The students exchange and discuss their knowledge in the forms of visits and symposiums, and get penetrating and correct judgment through collision of ideas.
学员以参观，座谈形式进行交流探讨，思想碰撞而获得真知灼见。
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