Scatter grading device carry on using the centrifugal impact crash principle to the material scatters, to disperse the shape realization graduation using the inertia and the aerodynamics principle.
打散分级机利用离心冲击破碎原理对物料进行打散，利用惯性及空气动力学原理对散状物了实现分级。
Using modularity design method, a process of designing a kind of centrifugal pump is discussed. Based on functional analysis, a scheme of optimum principle is determined.
应用模块化方法设计一种离心气泵，并在功能分析的基础上确定最佳方案。
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