短語詞組短語Secondary sealing element 輔助密封材料;輔助密封材質(zhì)heel of sealing element 密封元件的跟new type sealing element 新型密封件Stainless Steel Sealing Element 不銹鋼密封件flexible sealing element 柔性密封元件Dynamic sealing element 動(dòng)態(tài)密封材質(zhì)type sealing element 密封皮碗elastic sealing element 彈性密封件packer sealing element 封隔器膠筒 返回 sealing element