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新研制的BO11型通风机与批量生产的双级可逆式BO(?)型通风机的主要区别是:前者是单级式的并有工作轮叶片同时回转机构。新研制的通风机结构,能使材料消耗降低30～35％,借助高压空气动力系统可将圆
The newly developed BO11-type fan and mass production of two-stage reversible BO (?) Fan’s main difference is that: the former is a single-stage and a working wheel at the same time rotating mechanism. The newly developed fan structure, can reduce material consumption by 30 to 35%, with high-pressure aerodynamic system can be round