piston damping chamber活塞阻尼室
piston combustion chamber活塞燃烧室
piston valve chamber活塞阀室
recessed piston combustion chamber活塞顶凹腔燃烧室
brake accumulator piston spring chamber制动加力器活塞弹簧腔
bowl-in-piston combustion chamber碗形燃烧室
equalizing piston chamber均衡鞲鞴室
parking brake piston chamber停放制动器活塞腔