quasi-viscous 中文意思是什麼
quasi-viscous
解釋
半粘性的-
We consider there are two kinds of mechanism causing the attenuation of sound in grain. one kind of mechanism regards the grain as quasi - porous media. it was the viscous resistance and heat conduction in the narrow passageways between the grain kernels that convert the sound energy into heat energy and lose it
首次建立了準多孔介質的概念,可將堆積的糧食看作準多孔介質(顆粒介質) ,透入糧食內部的聲波在孔隙中傳播時,由於粘滯性和導熱性的效應,把聲能逐漸變成熱能耗散。
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