基本解释密封元件英汉例句雙語例句But this kind of breakdown often found the reason finally on the functional element, namely cylinder piston potted component serious attrition result.而最終此類故障還是常在執行元件上找到原因，即油缸活塞密封元件嚴重磨損所致。potted component更多例句专业释义機械工程密封元件