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The results indicate that the temperature dependence of ultrasonic attenuation in liquid hydrogen is mainly determined by volume viscosity effect.
实验结果表明，液氢的超声衰减的温度依赖特性主要取决于体积粘滞效应。
This phenomenon is explained by free volume and viscosity theory.
用粘度和自由体积理论解释了此现象。
The pressure drop of pipe increases with increasing of flux, liquid density, liquid viscosity, particle density and particle volume density.
管路压降随着流量、颗粒密度、颗粒初始加入量及液相介质密度和粘度增大而增大。
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