By comparing the characteristics of the natural spark with the man-made charge, Franklin was able to prove the similarity of electric matter and lightning.
通过对比自然电火花和人工电荷，富兰克林证实了带电物质和闪电之间的相似性。
Characteristics: meanwhile, welding and equipped with super-high sensitive spark protection device, press the finished product line pressing smooth without oily white, trimming sleek and feel good.
特点：同时熔接并装有超高灵敏火花保护装置，压出的成品压线平滑，不泛白，切边圆滑，手感极佳。
This paper studies the characteristics of cyclic combustion variation in spark ignition engines by using high speed schlieren photographs.
介绍了运用高速纹影摄影对火花点火发动机循环变动特性的研究。
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