片语
SECOND COMPRESSION RING第二道气环
piston compression ring活塞压缩环
compression inner ring活塞环扩张器
compression piston ring活塞气环
Intermediate compression ring中压缩环
stiffness of compression ring外压环梁刚度
barrel type compression piston ring鼓形活塞压缩环
headlamp compression ring头道气环
taper-face compression-ring锥面活塞压环