trend character extraction 趋势特征提取
Two important algorithm of Qualitative Trend Analysis (QTA) for process fault diagnosis is systematically introduced—trend extraction algorithm and trend identification algorithm.
本文系统介绍用于过程故障诊断的定性趋势分析(Qualitative Trend Analysis，QTA)两个重要算法：趋势提取算法和趋势识别算法。
参考来源 - 定性趋势分析在故障诊断中的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
To deal with this problem, comparison is made between the empirical mode decomposition(EMD) and the wavelet method in terms of signal trend extraction.
研究了强噪声混合条件下微弱信号的经验模式分解（EMD）问题，提出了一种基于随机共振降噪的EMD分解方法。
According to the analysis, the development trend of extraction apparatus was predicted, and it provided some references for the research o...
通过上述分析，预测萃取设备的发展趋势，为新型设备的研发提供参考。
It is considered that use of direct extraction technology for recovery of low-grade mineral resources is the trend of The Times and broad in prospects.
认为采用湿法浸出直接提取技术回收低品位矿产资源是大势所趋，前景广阔。
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