片语
valve rocker arm support阀摇臂支架
exhaust valve rocker arm排气门摇臂
valve motion arm阀驱动臂
forged valve rocker arm铸造摇桿阀
valve rocker arm clearance气门摇臂间隙
valve cross arm气门横臂
valve rod[机] 阀桿
valve stem[机] 阀桿
valve driving arm阀驱动臂
valve rocker arm bushing阀摇桿衬套
valve rocker arm阀摇臂