free burning coal是什么意思

用法例句

The origin and effusing pattern of gas at fully mechanized face with caving of roof coal in the inflammable coal seam,spile-drainage methods in mined area were introduced briefly,the experiences can be used for reference for gas drainage in the similar condition.

简要介绍了易燃煤层综放工作面瓦斯来源及涌出规律、采空区插管抽放工艺等,为类似条件下的抽放瓦斯工作提供了借鉴。

This paper studies economy analysis index system of burning blended coal of fire resistant coal from Viet Nam and free-burning coal from Tashan of China or Indonesia on 600 MW super critical unit.

研究了600 MW超临界机组掺烧越南无烟煤等极难燃煤种和塔山煤、印尼煤等极易燃煤种的经济性分析指标体系,给出了一套较为简单的、适合现场评估的经济分析指标。

Examination method of independent lighting rod in flammable and explosive place;

易燃易爆场所独立避雷针检测方法

For the fire accident in the flammable materials transportation,two-phase-coupled Eulerian-Lagrangian model and particle stochastic model are established,and a numerical simulation of fire accident of leakage of the truck filled with liquefied propane in tunnel is conducted based on the component mixture fraction model.

该文以易燃物质运输中的火灾事故为研究对象,建立相间耦合的Eulerian-Lagrangian模型和颗粒随机轨道模型。