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The polishing fluid is composed of Al2O3 micropowder with a grain diameter of 0.5-1.0 mum, coal oil, lard, plant oil and spindle oil, wherein Al2O3 micropowder is abradant, coal oil is solvent, the mixing liquid of lard, plant oil and spindle oil is as additive; and the polishing fluid is prepared by a mixing liquid which is composed of 2% lard, 2% abraser, 8% plant oil and spindle oil by volume and 88% coal oil. The polishing fluid can produce the H62 brass element with a uniform surface quality and a good surface roughness value up to 0.008 mum, has the characteristics of no eroding elements, effectively relieving mechanical score, good processing surface quality and can be used for decoration of the plastic metal material and surface polishing process before the material metallographic microscope analysis.

抛光液由粒径为0.5～1.0μm的Al 2 O 3 微粉、煤油、猪油、植物油和锭子油混合而成；其中Al 2 O 3 微粉为磨料，煤油作溶剂，猪油、植物油和锭子油的混合液作添加剂；抛光液按体积比由2％的猪油、2％的磨料、8％的植物油和锭子油的混合液、88％的煤油配制而成；该抛光液能够加工出表面质量均匀，表面粗糙度值达到0.008μm的H62黄铜工件，具有不腐蚀工件、有效缓解机械刻划作用、加工表面质量好的特点，可以用于塑性金属材料的外观装饰性加工，以及材料金相分析前的表面抛光加工。

By a study of top coal drawing method modelling with analogue material in laboratory, this paper presents the movement law of overburden strata and the ground presure mantfestation character of top coal drawing faces,at the same time,sets up the ground pressure structure model of top coal drawing faces.

通过对放顶煤开采方法的实验室相似材料模拟研究和现场矿压实测资料的分析，文章提出了放顶煤采场上覆岩层移动规律和采场矿压显现特征，同时还建立了放顶煤采场矿压结构模型。

K, the parent element of 40Arr, has different abundance in coal and argillite, which can be used in analyzing the difference between 40Ar/36Ar values of natural gases produced from coal and argillite, and identifying the main gas source in coal source rocks. In this paper, the forming mechanism of 40Arr and its process of entering into gas pool are discussed, on the basis of which a method for identification of main gas source is developed.

本文系统地讨论了 40Ar的形成机理及其运移进入气藏的过程，利用 40Ar的母体元素 K在煤和煤系泥岩中的丰度差异，分析了以煤和煤系泥岩为母源的天然气 40Ar/36Ar同位素组成上的不同，并利用这种差异对煤系中煤岩或煤系泥岩为源岩的天然气藏的主力源岩进行了判识，继而建立了利用氩同位素组成判识煤系烃源岩主力源岩的方法。

By analysis of common agent and special agent of coal enterprise's diversification, it is considered that coal enterprise's diversification is passive and blindest and it is suggested that coal enterprises should develop correlative diversification industries first.

分析了煤炭企业开展多元化经营的一般动因和特殊动因，认为煤炭企业多元化经营具有被动性、盲目性的特点，提出煤炭企业在进行多元化经营时要优先发展相关多元化产业。

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％。

This year, in the "largest port led to large logistics" of the development strategy, the big push forward the construction of the coal terminal, are: Huaneng Power Plant Haimen 150,000-ton coal pier and richness of plant Haimen 70,000-ton coal terminal building synchronization advance; Masan Port 35,000-ton coal terminal expansion project is also speed up the process.

今年来，在&以大港口带动大物流&的发展战略中，当局大手笔推进煤码头建设，有：华能海门电厂15万吨级煤炭码头和丰盛海门电厂7万吨级煤码头的建设同步推进；马山港区3.5万吨级煤码头扩建工程建设也在加快进行。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。