The errors of measurement of CPFM and CPFM with a referencechamber were theoretically analyzed in the paper.
该文从理论上对CPFM和带参考室的CPFM的流量测量误差进行了分析。
2
To verify the accuracy and reliability of the system, contrast tests on reference sound power source and small motor are performed respectively in a semianechoic chamber and a common room.