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3.9速度采样间隔velocity sampling interval一对超声换能器或声道进行相邻两次气体流速测量的时间间隔。...3.16速度场系数velocity field coefficient国家或行业发布的标准方法与超声波气体流速计同步测量烟气流速,国家或行业发布的标准方法测量的烟气平均流速与同时间区间且相同状态的超声波气体流速计测量的烟气平均流速的比值