reduction of the spool moving mass and viscous damping coefficient minifies the phase offset between the spool and the piston movements and leads to the increase of system volumetric efficiency.
减小阀组的阀芯质量和黏性阻尼系数可减小阀芯运动与活塞运动之间的相位差,提高系统容积效率;
the study also goes to the influence, upon stress waves, of the piles relaxation time, the equivalent viscous damping coefficient of soil around the pile and the unit rigidity of soil below the pile.
同时,分析了桩身驰豫时间、桩侧土的等效粘滞阻尼系数、桩底土的单位刚度等因素对应力波的影响。
comparing the fitted expression with the established theory expression of the angular velocity, the equivalent viscous damping coefficient is gained.