背负式机动鼓风喷雾器
motorized knapsack mistblower
电动鼓风机
electric blower
motor fan
dynamoelectric axial-flow
motor driven blower
汽轮机叶轮振动分析
Vibration of Steam Turbine Discs
离心式多级叶轮风机
centrifugal multi-level impeller blower
排粉风机叶轮
pulverized coal exhanster impeller
汽轮机叶轮
Centrifugal impeller of steam turbine
turbine disc