通过本部分的性能试验，利用最小二乘法对试验点进行拟合，由此获得多级离心鼓风机性能曲线及曲线方程。
By using least-square method to fit the experimental points , multi-stage centrifugal blower performance curve and curve equation are got .
多级离心式煤气鼓风机喘振现象及避免措施
Surge Phenomenon of Multistage Centrifugal Gas Blower and Precautionary Measures
多级离心鼓风机