较总流量分析法，仅能给出明渠断面平均流速有所改进。
There is improvement as compared with the method of total flow which only gives the average velocity of transverse profile of open channel.
根据不同流型讨论了等面积圆环法确定断面平均流速时所产生的误差。
The error caused by the ring method of equivalent area to measure the mean velocity of the circular pipe is studied by the different now pattern.
较总流量分析法，仅能给出明渠断面平均流速有所改进。
There is improvement as compared with the method of total flow, which only gives the average velocity of transverse profile of open channel.
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