There is a complete metamorphic series of coal from lignite to meagercoal in Wumuchang area, Yimin, the main metamorphism type is contact metamorphism of coal.
伊敏五牧场区存在着从褐煤到贫煤完整的变质系列，其主要煤变质类型为接触变质。
2
Through usual and unusual analysis on using meagercoal as fuel for bitumite-fired boiler, the innovation plan was made and corresponding modification of the boiler was carried out.
通过对烟煤锅炉改烧贫煤进行了常规和非常规的分析，制定了改造的方案，对锅炉进行相应的改造。
3
A linear regression was conducted and the functional relationship was found , which can afford reference for the security of meager - lean coal ' s industry application.