The electrical field redistributes ions that form the ion cloud.
该电场重新分配形成离子云的离子。
The second voltage creates an electrical field, which is preferably located in the vicinity of the ion cloud.
第二电压产生电场，该电场优选位于离子云的邻近处。
The ion cloud outline modulated by a step motor has been described with its size calculation formula presented;
本文导出了电机调制离子团尺寸及极板偏压的计算公式。
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