短語詞組短語compression piston ring 活塞氣環(huán)compression inner ring 活塞環(huán)擴(kuò)張器barrel type compression piston ring 鼓形活塞壓縮環(huán)taper -face compression-ring 錐麪活塞壓環(huán)SECOND COMPRESSION RING 第二道氣環(huán);第二壓縮環(huán);第二道壓縮環(huán);次進(jìn)汽門piston compression ring 活塞壓縮環(huán)headlamp compression ring 頭道氣環(huán)Intermediate compression ring 中壓縮環(huán)stiffness of compression ring 外壓環(huán)梁剛度 返回 compression ring