seal

Check seals on fridges and freezers regularly..定期检查冰箱和冰柜的密封装置。

seal of,证明；保证

mechanical seal,[机]机械密封

oil seal,油封

seal in,封入

seal ring,n. 印章戒指

rubber seal,n. 橡胶密封圈；橡皮垫；橡胶塞；橡皮密封

shaft seal,轴封，轴封装置；主轴密封

gas seal,气封

seal up,密封住

seal with,用…密封

official seal,公章；单位印章

water seal,水封

packing seal,密封垫，填料密封

seal face,压紧面

under seal,盖上公章；密封

seal oil,海豹油；密封用油

pressure seal,加压密封；压力封闭

seal off,封闭；把…封锁起来

labyrinth seal,迷宫式密封；曲径密封垫片

face seal,面密封