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。
2
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。
3
The tensile testing of A3 steel plate samples was monitored with acoustic emission.