The method of adjusting the running speed rate of cassette tape recorder by Lichtenberg' s figures is easy snd practical.
用李萨如图形调整盒式磁带录音机走带速率的方法方便、适用。
The phenomena in oil-pressboard surface discharge has been studied in detail by means of lichtenberg figure technique.
本文利用胶片电花图技术较深入地探索了油—纸沿面放电现象。
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