The most popular design methods of the axial fan are the Single Aerofoil Method and the Cascade Method.
其工程上的设计方法比较单一，普遍采用的方法是孤立叶型法和叶栅法。
On the basis of an elementary cascade method a calculation model for the off-design performance of an axial-flow compressor has been set up.
基于基元叶栅法，建立了轴流式压气机的变工况计算模型，并采用变比热公式计算空气的热力参数；
The measuring modules of the system adopt a cascade method, control the power control switch of the next measuring module and then output the measuring data after the measurement.
本发明的测量模块采用级联方式，依次控制下一测量模块的电源控制开关，在完成测量后输出测量数据。
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