单词：sealing-off
音标：['si:lɪŋ'ɔ:f] ；
封口，开焊; 拆焊
sealing-off的用法和样例：
例句
- It adopts double working position for winding,unwinding and sealing.双工位放料和收卷，双工位封口。
- The shaping step is especially designed to keep the sealing from breaking, so the sealing is flat and smooth.为了避免封口起皱，本机特设计整形工位，使封口平整无褶皱。