超声波流量计的历史（1） 1928年德国人研制成功第一台超声波流量计，并取得了专利。至今超声波流量计以有75年历史（2）1955年首先应用于马克森（MAXSON）流量计测量航空燃烧油，这是一种基于声循环法的两组探头（换能器）组成的液体流量计（3）1958年A.L.H-ERDRICH等人发明折射式探头，由于他们的研究可进一步消除由于管壁的交混回响所产生
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