精选优质文档-倾情为你奉上 南昌工程学院毕业设计(论文)外文资料翻译学 院：机械与电气工程学院专 业：10机械设计制造及其自动化姓 名： 叶熠学 号： 外文出处：Network resources指导老师：沈智附 件：1.外文原文；2. 外文资料翻译译文。专心-专注-专业附件1：外文原文Belt Conveying Systems Development of driving systemAmong the methods of material conveying emploved, belt conveyors play a very imporient part in the reliable carrying of material over long distances at competitive cost. Conveyor systems have become larger and more co
