The present work concerns in the experimental study on producing ma order of negative oxygen ions with a pocket permanent magnet Penning source.
文章涉及用袖珍永磁潘宁源产生毫安级氧负离子束的实验研究。
Maximum signal currents are of the order of 50 ma.
最大信号电流是在50毫安这个数量级。
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