Dust accumulation of more than 0.8 millimeters - covering at least 5 percent of a room's surface poses a significant explosionhazard.
粉尘沉积超过0.8毫米,覆盖房间表面达5%或以上时,会有重大的爆炸隐患。
2
The mine electric leakage can not only cause the electric shock of the people but also some serious accidents such as the fire hazard, coal dustexplosion, and gas explosion, etc.