准多 meaning in Chinese

junta

Considering the viscous interaction between the kernel and the air inside the grain the paper shows the dynamic tortuosity function in grain . considering the thermal exchanges between the kernel and the air the paper shows the dynamic permeability function in grain
考虑准多孔介质声传播中存在空气与颗粒间的粘滞力和惯性力，推导出准多孔介质中孔隙动态曲折度函数表达式。
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
首次建立了准多孔介质的概念，可将堆积的粮食看作准多孔介质(颗粒介质) ，透入粮食内部的声波在孔隙中传播时，由于粘滞性和导热性的效应，把声能逐渐变成热能耗散。