查询词典 coal mine

Based on the study of gas solid flow field in blowpipe of BF with oygen enriched PCI, the oxygen and coal concentration distribution inside the blowpipe were simulated and discussed, including the influence of position and inserting angle of the oxygen coal lance, the pattern of the oxygen enriched jet, as well as grain size of the coal.

在对高炉局部富氧喷煤直吹管内气固两相流流场研究的基础上，对直吹管内氧和煤粉的浓度场进行了数值研究，包括氧-煤喷枪的插入角度和枪位、局部富氧射流的漩流数以及煤粉粒度的影响。

The coal gas dry process desulphurization technology application early, most early applies in the coal gas dry process desulphurization technology is take the bog ore as the sweetening agent ferric oxide desulphurization technology, afterwards, studies successful and the production cost along with the coal gas desulphurization activated charcoal reduces relatively, the activated charcoal desulphurization technology also starts widely to apply.

煤气干法脱硫技术应用较早，最早应用于煤气的干法脱硫技术是以沼铁矿为脱硫剂的氧化铁脱硫技术，之后，随着煤气脱硫活性炭的研究成功及其生产成本的相对降低，活性炭脱硫技术也开始被广泛应用。

This paper analyzes the causes of the blockage of the shaft coal bunker ,and puts forward some methods of treating the blockage of shaft coal bunker and some suggestions for the construction of preventing the blockage of shaft coal bunker .

分析了煤矿井下煤仓堵塞发生的原因，提出了煤仓堵塞的处理办法及防止煤仓堵塞的施工建议。

Although there is a little carbonite caused by some magmatic dikes in the CarboniferousPermiam coal, most Carboniferous-Permian coal has no great differences in vitrinite reflectance, crystalline indices, bulk specific gravity, hardness, and the content of velotile matter from the Jurassic coal, and both are super-anthracite.

区内石炭—二叠系煤与侏罗系煤除了前者含有一些由侵入体造成的天然焦或半焦外，二者均为超无烟煤，在镜质体反射率、煤晶核结构、显微硬度、挥发份和容重等方面上均没有明显的差异，说明区域变质是在煤系地层沉积之后发生的。

ABSTACT Coal gangue is the solid castoff of coal mining and machining process, which usually accounts for the 10%-15% of the total coal pro...

煤矸石是煤炭开采与加工过程中产生和排放的固体废弃物，其产量约占煤炭产量的10％-15％。

ABSTACT Coal gangue is the solid castoff of coal mining and machining process, which usually accounts for the 10%-15% of the total coal product.

煤矸石是煤炭开采与加工过程中产生和排放的固体废弃物，其产量约占煤炭产量的10％-15％。

With the views of the actual situations of industry of province, this article studies the theory of economy transformation on local coal resources, analyzes and compares some successful methods of the transformation in coal industry , And at first by means of the mathematics model, researches the development of economy transformation of Shanxi cities with coal resources and its major measures.

本文结合山西省的实际情况，通过对区域煤炭经济转型的理论研究，分析比较世界煤炭产业转型较为成功地区的一些具体做法，并通过简单的经济数学优化模型，初步探讨出山西煤炭资源型城市经济转型的发展方向和应采取的主要保障措施。

A coal mining in thin seam is an inevitable issue of coal mining in many coal mines.

薄煤层开采是许多矿井煤炭开采中不可避免的问题。

Coalification has been one of focuses for coal geology and the organic geochemistry, in recent years, with the development of coal-generated hydrocarbon and coal bed gas, understanding of the mechanism of coalification is especially important.

煤化作用一直是煤地质学、有机地球化学等学科的研究内容之一，尤其是近年来随着煤成烃及煤层气等相关问题的开展，煤化作用机理的研究显得尤为重要。

Because of the complexity of the coalification process and the diversity of the coal-level indicators ,it was induced that resulting in different coalification stages the coal-level indicators were significantly different and coal-division was rather difficult.

煤化过程的复杂性和煤级指标的多元性，导致不同煤化阶段中的各煤级指标显著不同，煤级划分比较困难。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48