探讨了孔口流量计流量不确定度的主要来源，为精度控制提供了理论依据。
The main sources of the orifice flowrate' uncertainty were discussed, and then the theory basis for the precision control was provided.
探讨了孔口流量计流量不确定度的主要来源，为精度控制提供了理论依据。
The main sources of the orifice flowrate' uncertainty were discussed, and then the theory basis for the precision control was provided.
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