为了避免电场受到影响，点电极和箱体壁之间保持了较大的间距（12 cm），这样，电场强度的分布就不会受到影响
in order to avoid the electric field being distorted, the distance between the point electrode and the wall of the chamber is designed enough big, it is 12 cm., in this case, the electric field will not be distorted.
In order to avoid the influence on the electric field, a much larger distance (12 cm) between the point electrode and the chamber walls was set up, so the distribution of the electric intensity will not be affected.
electric field strength will not be influenced。电场强度一般翻译为electric field strength ，影响一般用influence ，最后一句的翻译为electric field strength will not be influenced。可能更准确
The distance between the point electrode and the chamber walls is designed to be 12 cm, so the distribution of the electric intensity will be lessly influenced.
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