介绍了超声波流量仪的构成及工作原理与特点，说明该设备是一种有效的明渠流量测试设备。

This paper introduced the composition, operational principle and character of ultrasonic flow instrument and explains that this is an effective flow test instrument for open canal.

youdao

介绍了超声波流量仪的构成及工作原理与特点，说明该设备是一种有效的明渠流量测试设备。

This paper introduced the composition, operational principle and character of ultrasonic flow instrument and explains that this is an effective flow test instrument for open canal.

youdao