The basic acoustictheory and principle used in reconstruction of cross-section velocity field are also presented.
详细介绍了声波法重建断面速度场的理论知识和基本原理。
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According to acoustic structure theory base, acoustic principle of multi-holes acoustextile and nonwovens characteristics, nonwovens acoustictheory are analysed in the paper.
On the basis of acoustictheory, combined with lab experiments and theoretical derivation, the dissertation presents a thorough study of the mechanism of ultrasound's effect on viscosity reduction.