【摘要】 介绍一种可滚动展示多幅画面的广告展示装置，描述了该装置的结构、工作原理及主要性能，给出了有关 参数的计算方法。更多还原

【Abstract】 A modular automatic advertisement display device, to be used in stadiums, airports, supermarkets, station passages and so on, is introduced. The structure, work principle and technical parameters of the device are described. A detailed calculation of some parameters is given.更多还原