porthole
... 组合转让 portfolio transfer 观察口;炮眼;舷窗;舱口;汽门;通道口 porthole 部分;一份;分配 portion ...
steam port
... 汽力鼓动船steam driven vessel 汽煤(锅炉用)steam coal 汽门steam port 汽密接合steam tight joint ...
english Valve
汽车各个零部件中英文对照 - 『汽车外语-专业英语... ... 曲轴轴承片 < english> Crankshaft Bearing 汽门 < english> Valve 汽门座 < english> Valve Seat ...