You have 12 vertical launch tubes.

你有12个垂直发射管。

When the electric match ignites, the shell is going to propel from the launch tube.

一旦电子火柴打火，烟花弹就从发射管升空。

So those are the launch tubes. The actual explosives, the fireworks are stuffed in those?

这些是发射管。炸药，烟花被塞进里面？

But the ZUMWALT can carry up to 12 of the 8 tonnes missiles in four multi-missile launch tubes.

但朱姆沃尔特可以在四个多导弹发射管中携带多达 12 枚 8 吨导弹。