1. 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；

2. The results show that the sensitivity of the sandwich panels increases and the frequency width minifies with increasing the cell size of the honeycomb.
    研究结果表明：蜂窝孔迳增大，夹心板灵敏度增加，频宽变窄；