派特莱报警器EWH24E/EXN 手册pdf,派特莱为防爆产品预先录制了音乐与旋律的组合，适合2区和22区的应用。■ How Explosion Occurs
Various Applications for Explosion-Proof, Explosion-Safe and Harsh Environments.
Prerequisites for an explosion
Mixture of oxygen and explosive substance develop
explosiv
