bottom drive meaning in English

井底驱动

There are sever kinds of strap mills : horizontal mills - - two roll strap mills and four roll strap mills , and vertical mill with upper drive and bottom drive
带钢轧机有二辊带钢轧机和四辊带钢轧机，都是水平辊轧机，还有上传动立辊轧机和下传动立辊轧机。
Software design includes the following : firstly stb part - bottom drive : including front - end drive , flash drive , the receiving software of the front board key - press and remote control signal
机顶盒部分底层驱动程序，包括：前端驱动、 flash驱动、前面板按键接收软件和遥控信号接收软件等。
This software was partitioned of bottom drive , middle control units and application layer three layers . it realized the de - multiplexing of complex ts and real time preview and recording of program , efficiently , expediently , intuitively . and the recoding material can be uploaded to center media library straight , which provide a plenty of program resource for the vod system
该软件系统分为底层驱动、中间层控件和应用层三个层次,实现了ts流的软解复用和节目的实时预览收录,高效、便捷、直观性强,收录素材可直接上载到中心节目库,为城域vod提供了丰富的节目来源。