短語(yǔ)詞組短語(yǔ)SEAL VALVE STEM 氣門(mén)桿油封valve stem seal 氣門(mén)油封;密封活塞桿valve stem seal assembly 氣門(mén)桿密封組件Valve Stem Seal Remover 侑嘉工業(yè)有限公司Soft seal valve stem 軟密封閥桿 返回 stem seal valve