lignitic coal

例句：

1. 1. The mine produces a significant amount of lignitic coal for the local power grid.
   该矿生产大量的自燃煤，供应当地电网。
2. 2. Due to its high lignitic content, this type of coal is prone to spontaneous combustion.
   由于其高自燃性，这种煤容易自发燃烧。
3. 3. Coal mining companies are increasingly using advanced technologies to prevent lignitic coal from causing accidents.
   煤矿公司正越来越多地使用先进技术来防止自燃煤引发事故。