Abstract: In order to improve the periodic permanent magnetic (PPM) focusing the performance of traveling wave tubes (TWTs) for the higher current, the analysis and experimental study of the ...
Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...
School of Foundational Education, University of Health and Rehabilitation Sciences, Qingdao 266113, China Qingdao Institute for Theoretical and Computational Sciences, Institute of Frontier and ...
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