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阐述了电磁式井下液体流速传感器的设计原理、结构和研制样品的实验结果。研制的电磁式井下液体流速传感器具有体积小、线性好、高稳定和低噪声的优点，可广泛应用于油田井下液体流速和工业管道中液体流速的测量。
The design principle, structure and experimental results of the developed sample are described. Developed electromagnetic downhole liquid flow sensor has the advantages of small volume, good linearity, high stability and low noise, which can be widely used in the measurement of downhole liquid flow rate and liquid flow rate in industrial pipes.