阐述相分率测量原理和流速测量原理，分析多相流量计测量相对不确定度。
The operating principles of velocity and phase fractions measurements were discussed. Its uncertainties were analyzed in detail.
通过实验数据，归纳总结出电容测量模块和射频测量模块用于测量相分率的经验公式。
The formulae of the capacitance module and RF module are attained after analyzing the experimental result.
这为光栅测量提高检相分辨率，展示了新的途径。
This opens a new way to improving phase-detecting resolution for grating measurement.
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