以下为句子列表：
英文: Based on invariability of the quality factor of wavelet transform, combined with proper wavelet group, this paper discusses the application of wavelet transform in the detection of backscatter signal.
中文: 摘要基于小波变换品质因数不变性的特点，结合适当的小波基，探讨小波变换在回波信号检测中的算法。
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英文: Emphasis is placed on the industrial application of gamma scanning in tower operation and the neutron backscatter in the level detection of an industrial gas/liquid separator and a hydrogenation reactor.
中文: 这些应用情况表明，利用射线检测技术不仅可以准确诊断石油化工设备的故障，还可以用于装置的运行状况评价、操作优化、挖潜增效以及实现预测维修等多个方面。
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英文: Gamma scanning and neutron backscatter techniques, which are widely used in petrochemical plants, are briefly introduced.
中文: 摘要对γ射线扫描技术和中子背散射技术的基本原理及其在石油化工装置中的主要应用进行了简要介绍。
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英文: On the basis of algorithm analysis, from aspects of detecting principle, detecting steps and computer emulation, the authors expatiate how to use wavelet transform to detect backscatter signals' time difference and find the fantastic point of backscatter
中文: 在算法分析基础上，从检则原理、检测步骤、计算机仿真方面阐述如何利用小波变换检测回波信号时差，以确定回波信号的奇异点（回波信号到达时间点），进而确定被探测目标的位置。
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英文: Backscatter Sounder for Ionosphere Diagnoses
中文: 电离层后向散射探测仪
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