In the thesis, a non-contact measurement technology by combining an eddy current displacement sensor with a sonic thickness sensor was put forward to measure timely real plate gap of refiner.

本文对采用电涡流传感器和超声波测厚仪组合实时非接触测量磨盘真实间隙的设计方案进行了研究和探讨。

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In this paper, functions and measurement principle of the sonic signal processing in thin layer logging are introduced, at the very beginning.

文章介绍了薄层声波测井的作用和测量原理，分析了以前信号处理方法存在的缺陷。

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Considering the importance of sonic nozzles in the field of gas flow measurement, a suitable humidity correction method is required in order to eliminate the systematic error.

鉴于音速喷嘴在我国气体流量计量领域内的重要地位，为消除系统偏差，需要确定适合我国的湿度修正方法。

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