通过改变叶片数和出口安装角构造扩压器，进行CFD分析，建立样本数据。
Through changing vane number and exit installation Angle to construct candidate diffusers which are analyzed by CFD, sample data is then setup.
在试验基础上提出了多叶通风机变叶片安装角性能计算方法。
The method of performance prediction for multi-vane centrifugal fan with variable blade angle is presented.
当叶片安装角度改变后，叶片对水的升力也就改变了，从而改变了水泵的工作性能，这就是轴流泵的变角调节。
When the blade installation Angle changes, the leaves of water lift is changed, thus changing the water pump job performance, this is the axial flow pump of the variable Angle adjustment.
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