A boy was kept busy marking up the runs on a board. 一个男孩儿正忙于在一块板上记录赛跑成绩。
Mainly described are the working principles and structure features of the number marking device for the computer-controlled signal board. 主要介绍了微机控制标志板打号机的工作原理及结构特点。
The Number Marking Device for the Computer-Controlled Signal Board 微机控制标志板打号机
Word-wide attention has been given to the research and production of corrugated paper boards and machinery for marking paper board boxes. 长期以来从事瓦楞纸板生产线和纸箱设备的研制和生产一直受许多国际大公司所关注。