Mainly introduced the microwave extract principle, microwave extract characteristic as well as application and so on.
首要引见了微波萃取的道理、微波萃取的特性以及应用等等。
The method of bispectrum can extract characteristic of seismic series bispectrum and detect fracture zones by decreasing dimensions.
双谱法通过采用模式识别的方法对地震序列的双谱提取特征，通过降维实现裂缝发育带的检测。
The emphasis and difficulty lie in how to extract characteristic of signal efficiently, that is, the problem of seeking classification criteria.
其重点与难点在于如何有效的提取信号中的特征量，即分类标准的找寻问题。
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