短語詞組短語valve motion arm 閥敺動臂valve rocker arm bushing 氣門搖臂襯套;閥搖桿襯套forged valve rocker arm 鑄造搖桿閥valve rocker arm 氣閥搖桿;氣門搖臂;氣閥搖臂valve cross arm 氣門橫臂valve rocker arm support 閥搖臂支架valve rocker arm clearance 氣門搖臂間隙exhaust valve rocker arm 排氣門搖臂valve driving arm 閥敺動臂 返回 valve arm