blast indicator

例句：

1. 1. The blast indicator on the control panel indicates that the gas is about to explode.
   控制面板上的爆震指示器表明气体即将爆炸。
2. 2. The blast indicator was used to monitor the gas pressure during the explosion.
   爆震指示器用于在爆炸期间监测气体压力。
3. 3. The blast indicator helped us to quickly identify the source of the explosion.
   爆震指示器帮助我们迅速确定了爆炸的源头。