impulse sealing

• 脉冲封口,脉冲焊接,脉冲热合

impulse sealing的用法和样例：

例句

1. It adopts double working position for winding,unwinding and sealing.
   双工位放料和收卷，双工位封口。
2. 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。