文章介绍了M9型声学多普勒流速剖面仪的组成和工作原理,对M9型声学多普勒流速剖面仪在水文测验应用中的优势和局限性进行了多方面的比较、分析,进一步阐述该设备在水文水资源、河流测流断面的巡测、防汛抗旱工作及其他突发水事件流量测验中的推广使用价值,为做好声学多普勒流速剖面仪推广应用提供参考。 This article introduces the composition and working principle of M9 Acoustic Doppler Velocity Profiler and compares and analyzes the advantages and limitations of M9 Acoustic Doppler Velocity Profiler in hydrological test application Equipment in hydrology and water resources, the river current-flow section of the survey, flood control and drought and other sudden water events flow test value of the promotion, in order to do a good job of popularization and application of acoustic Doppler flow profile to provide a reference.