【摘要】 本文介绍了卷绕式真空镀膜机几种膜长计数装置的结构及计数原理，并分析、总结了各自的特点及应用场合。更多还原

【Abstract】 Abstract In this paper,the structure and calculating principle of several counters for film length of roll coating plant are described,and the performance and use are analysed and summed here.更多还原