卷绕式真空镀膜机的膜长计数装置
Film length counting devices of coiled vacuum coating machine
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摘要: 介绍了卷绕式真空镀膜机的几种膜长计数装置的结构和计数原理。分析，总结了各自的特点和应用场合。Abstract: The structures of several kinds of film length counting devices of coiled vacuum coating machine and the counting principle have been presented.Their features and aplications have been analyzed and summarized.
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