当采用某种固定的安装方式时，通过调整超声波流量计的安装角度可以在最大程度上降低因为流场扰动产生的误差。

When uses the way of some kind of fixed installs, it would be possible in the greatest to reduce the error that produces from the perturbation of flow field through the adjustment the angle.

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文中证明了电导率变化引起恒流场和恒压场扰动的基本公式、修正g - L公式以及声场诱发电场扰动公式。

The formula of constant voltage and constant current field perturbation, modified G-L formula and the formula of electrical field perturbation evoked by sound field are derived.

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本文提出了用小扰动欧拉振幅方程求解振动叶栅非定常流场的方法。

In this paper, the Euler amplitude equation is developed to obtain the unsteady flow field in vibrating cascades.

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