依据电机学原理设计一种录像机磁鼓电动机驱动电路，并介绍了电路的主要结构和工作原理。
This paper designs the driving circuit of the memory dram electromotor by the theory of television and introduces the structure and principle.
本文提出了由计算机向磁鼓传输大批次数据中的机鼓匹配问题。
The paper deals with the matching problem of electronic computers and magnetic drums in transfering numerous data.
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