Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
It has been found that the effects of soil fe and Mn on soil methane emission were caused by affecting soil Eh and root plate.
土壤中铁、锰通过对土壤氧化还原电位及根膜形成的影响而影响甲烷的排放。
The tensile testing of A3 steel plate samples was monitored with acoustic emission.
用声发射监测a 3钢板状试样的拉伸过程。
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