查询词典 coal-black

This mine is in after geological to 21212 working face, 31605 working face, 21604 working face condition and mine situation undertake on-the-spot perambulate, made corresponding exploitation plan a few days ago, strive to be below the case with geological complex condition, reclaim the coal that can pick more as far as possible, the mine that makes good triangle coal and working surface ending work, reclaim with what utmost land increases coal resource rate.

该矿在对21212工作面、31605工作面、21604工作面地质条件和开采情况进行实地勘查后，日前制定了相应的开采方案，力争在地质条件复杂的情况下，尽可能将可采的煤炭多回收，并做好三角煤的开采和工作面收尾工作，以最大限度地提高煤炭资源的回收率。

The development of using coal petrography blending in steel enterprises from early time to present-day as well as the more mature coal petrography blending methods existing in our country and outside is summarized,and point out that the coal petrography blending in our country should be developed deeply in the future.

从早期到现代对国内外利用煤岩学配煤在钢铁企业的发展历程进行了综述，总结了我国现有的较成熟的煤岩配煤方法，最后指出我国的煤岩配煤还有待深入发展。

The application of coal petrography technology in coking coal blending makes the blending method more effective and the prediction of coke quality possible, which creates condition for the qualitative experiential coal blending being developed into a scientific quantitative one.

煤岩学在炼焦配煤技术上的应用，使炼焦配煤手段更有效，使焦炭质量预测在生产上应用成为可能，为定性的经验配煤技术跃变到定量的科学配煤技术创造了条件。

China ; coalbed methane ; coal reservoir ; coal petrography ; coal physics ; controlled gas mechanism

中国；煤层气；煤储层；岩石学；物理学；控气机理

Preliminary study of coal chemistry and coal petrography about the raw material used to prepare for HA—type binders indicated that the content of free humic acid in the coal is excellently linear with the binder properties.

本文对制备HA型粘结剂的原料进行了煤化学、煤岩学的初步研究，煤化学的研究表明，原料煤中游离腐植酸的含量与煤对应粘结剂的性能呈正相关性且线性关系较好。

Based on the characteristics of coal quality and coal petrology, the liquefaction property of low rank coal in the studied areas is discussed in the paper.

从煤质和煤岩基本性质出发，探讨了研究区低煤级煤的液化性能。

Coal electric drill is the one of the implements of production to excave coal in the pit .The install environment of coal electric drill and power supply system is odious .

煤电钻是井下采掘工作的主要生产工具之一，煤电钻及其供电系统安装环境劣，与工作人员接触频繁，故障率高。

In the process of the simulation, set the density of the coal, porousness of coal, permeate coefficient and natural containing water rate etc. as well as the radius of the water infusion hole and water infusion pressure to the concrete coal seam.

在数值模拟当中，针对具体的煤层进行了煤的密度、孔隙率、渗透系数、自然含水率等参数的设定，同时对煤层注水的注水孔径，注水压力的设定。

This paper Puts forward the four main parameters of the Permeability classification for coal mass es, that is,the fractal dimension of the cracks in coal mass es,the number of the cracks in one meter's characteristic scale, the conducting water coefficient of coal samples and its Porousness; and founds the mathematical pattern of the complex judgement by fuzzy sets.

提出了进行煤体渗流特性分类的四个主要指标，即煤体裂隙分布的分形维数D、特征尺度L＝1m的裂隙条数N、煤样导水系数T和煤的孔隙率η等；建立了煤体渗流特性模糊数学综合评价的数学模型；根据煤层注水工程应用的实际情况。

This paper discusses the position and important role of local coal mining in whole coal mining industry, and looks ahead the developing trend of local coal mining.

本文分析了地方煤矿在整个煤炭工业中的地位及其在国民经济中的重要作用，展望了我国地方煤矿的发展趋势。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。