排列5走势图

排列5走势图

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谈谈孔板流量计丈量差错大的解决技巧

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  管道中因为气体的流速和压力发作俄然改变,形成脉动流,它能致使差压的动摇,而节省设备的流量核算公式是以兰孔板的安稳活动为根底的,当丈量点有脉动景象时,安稳原理不能成立,然后影响丈量精度,发作计量差错。脉流流量总不确定度等于按GB/T2624-93核算的丈量差错与脉动附加不确定度的组成。

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