Underdrive Pulley (automotive)什么意思

Undergraduate Degree Program本科学位 Unreliable Datagram Protocol不可靠的数据协议 Unit Deployment Package单位部署包裹 Unit Deployment Program项目单位部署 Uridine 5'-Diphosphate尿苷二磷酸 User-Defined Procedure用户自定义过程 Unit Deployment Plan (US DoD)美国国防部计划(部署单位) Universal Dialing Plan环球拨号计划 Unified Development Platform统一的开发平台 Up and Down Procedure上升和下降的程序 User Defined Process用户自定义的过程 Umpire Development Program (umpire evaluation process)裁判发展计划(裁判评估过程) Underdrive Pulley (automotive)Underdrive滑轮(汽车) Up Down Pair (telecommunications)对了下来(电信) Uniform Daylight Period统一的日光