bright coal

网络光亮型煤; 光亮煤

双语例句

Through practice it is proved that the PDFL is a key technique for solving the problem in extinguishing the spontaneous fire, which has a bright future in coal mines. 实践证明，该技术是解决煤层自燃火灾治理难题的关键技术，具有重要的推广价值。

Modern coal chemical industry has shown a bright future by transferring its basis from coal carbonization to coal gasification. 现代煤化工将其基础从煤的碳化转向煤的气化，从而展现了光明的前景。

This paper also indicates the future technological development trends of this smelter, and presents the bright prospects of vertical retort zinc smelting based on using low cost coal as a main energy source. 也介绍了该厂今后的技术发展趋势，展示了用廉价煤作主要能源为特点的竖罐炼锌法新的活力。

Lithotype is belonged to bright coal and semibright coal; 煤岩类型为光亮、半亮煤；

By analyzing we can know that the Yanan Formation is mainly durain, with bright coal taking the second place. 分析可知延安组煤层以暗煤为主，亮煤次之。