The cover image is based on the Research Article A hydrate blockage detection apparatus for gas pipeline using ultrasonic focused transducer and its application on a flow loop by Xingbo Li et al., https://doi.org/10.1002/ese3.631.

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封面

封面图像基于研究文章A使用超声波聚焦换能器的天然气管道水合物堵塞检测设备及其在Xingbo Li等人的https://doi.org/10.1002/ese3.631。