摘要
简要介绍了国内外对旋轴流式局部通风机的发展概况及ＤＳＦ系列产品的结构、工作原理、性能特点及推广使用情况。
This paper gives a brief descrip-tion of the developrment of contra-rotatingaxial-flow auxiliary fans both at home andabroad and the structure, working princi-ple, performance and application of DSFseries contra-rotating axial-flow fan.
