煤的分类分为三种分别是煤的成因，煤的科学，煤的实用。煤的实用分类又称煤的工业分类。按煤的工艺性质和用途分类，称为实用分类。中国煤分类和各主要工业国的煤炭分类均属于实用分类
vi. coal
misc. type of coal
我国煤炭资源分布的特点是地域分布和煤种分布都不均匀。
The characteristic of coal resources is nonuniform distribution in regions and coal ranks in China.
去年，矿区煤质基础工作得到明显加强，煤质、煤种预报效果明显。
Last year, the basic work of coal mining area has been markedly strengthened, coal, coal forecasts evident result.
采用热重分析和岩相分析等方法，对复杂煤种的燃烧特性进行了评价。
By adopting the analytic methods such as thermal-gravimetric analysis and petrographic analysis, an appraisal research on burning characteristics of the composite coal is made.
应用推荐