explosive index of coal dust

例句：

1. 1. The study of the explosive indexof coal dust is crucial for understanding itspotential hazards.
   研究煤炭粉尘的爆炸指数对于理解其潜在危险至关重要。
2. 2. Themine safety department has released a report onthe explosive index of coal dust in recentyears.
   矿安全部门最近发布了一份关于煤炭粉尘爆炸指数的报告。
3. 3. Dueto the high explosive indexof coal dust, it isnecessary to implement strict control measures toprevent accidents.
   由于煤炭粉尘的高爆炸指数，有必要实施严格的控制措施以防止事故。