In this paper, the structure and calculating principle of several counters for film lengthofroll coating plant are described, and the performance and use are analysed and summed here.
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。
2
In this article author puts emphasis upon the discussion about distribution regularity ofroll flattening along the lengthofroll body and optimum roll-bending force, which is of certain value.
本文重点讨论轧辊弹性压扁沿辊身长度分布的规律及最佳弯辊力，有一定参考价值。
3
Overlap sheets of newspaper by about one third of their length and roll them into a tube.