查询词典 nut coal

In order to prevent and reduce coal mine coal bunker channeling thewarehouse equipment damage, casualties, Roadway congestion andimpact production, and other hazards, for the design of areciprocating coal channeling anti-aircraft positions devices, forthe coal bunker channeling warehouse control provides a new way.

为了防止和降低煤矿井下煤仓窜仓造成的设备损坏、人员伤亡、阻塞巷道和影响生产等危害，设计了一种用于往复式给煤机的防窜仓装置，从而为煤仓窜仓的防治提供了一个新的途径。

It uses two normal-pressure fluidized beds and makes the material circulate between the two beds, the fluidized bed boiler produces steam and the fluidized bed coal cracking furnace is used for pyrolyzing coal powder to produce meidum caloricity coal gas; the heat quantity needed for coal pyrolysis is provided by hot ash acted as heat carrier.

流化床煤气－蒸汽联产工艺及装置，它采用两个常压流化床，使物料在两床之间循环，流化床锅炉产生蒸汽，流化床煤裂解炉用来热解粉煤，产生中热值煤气；热灰作为热载体提供煤热解所需的热量。

9 kinds of metal oxides are selected, after 0.5%, 1%, 3% and 5% of them based on dry coal quantity are blended into Masteel coal blend, Luling coal and Gujiao coal to carbonize into crucible coke, coke micro strength, structural strength and coke reactivity are measured.

摘 要：选取9种金属氧化物按干煤量0.5%、1%、3%、5%添加到马钢配煤、芦岭煤、古交煤中炼成坩埚焦后，测定焦炭的显微强度、结构强度、焦炭反应性。

Xiucheng Coal Mine:Coal mining hit area is 16 sqm,coal mining reserves is 6 million tons,it is a kind of gas rich coal with 6580 c/g.and it belongs to a kind of industrial coak.

休城煤矿：矿井面积16平方公里，可采储量6432万吨，煤制裁为气肥煤，发热量为6580卡/克，属优质配焦工业煤。

The vast majority of China's coal mine gas, gas production in coal mine accident was the worst natural disaster in one of the accurate determination of coal seam gas pressure on the mine to the development of effective and reasonable gas control measures, forecasting coal and gas outburst danger , and are of great significance.

我国煤矿绝大多数是瓦斯矿井，瓦斯事故是煤矿生产中最严重的自然灾害之一，准确的测定煤层瓦斯压力对矿井有效而合理地制定瓦斯防治措施、预测预报煤与瓦斯突出的危险性，都具有重要的意义。

The paper first constructs the relating technology framework between coal low temperature self-heating thermal properties parameters and spontaneous combustion, by means of testing on coal samples of diffusibility relative to oxygen, gas-producing simulation in self-ignition process, adiabatic oxidation process, coal spontaneous combustion processing simulation, coal basic physical and chemical parameters, thermal analysis by differential scanning calorimeter , differential thermal analyzer , Thermogravimeter .

通过对试验煤样进行煤对氧的扩散特性试验、煤自然发火过程中气体产物模拟实验、DSC差示扫描量热热分析测试、DTA与TG热分析测试、煤自然发火绝热氧化过程试验、煤自然发火过程模拟试验、煤基础物理化学参数测试的试验研究，就煤对氧的扩散与吸附特性、煤自燃氧化过程中的热力特性与气体产物特性及其与煤自然发火过程之间的相关特性进行了较系统的研究，初步建立了煤低温氧化自热热物理特性参数与煤自然发火之间相关联的技术内涵。

In addition, the construction of oil to 5.94 yuan/share issue directed to the Shan Coal Group is not more than 450,000,000 shares of its stock held 3 coal mining companies, 18 coal trade and its stake in the company's headquarters and domestic sales of coal-related business assets And liabilities.

此外，石油建设至5.94元/股发行定向到山煤业集团不超过4.50亿的股份举行了3煤矿公司，18个煤炭贸易及其在公司总部和国内销售煤炭股份相关业务的资产和负债。

Based on the spot measure and coal sample fracture experiment, the distribution of the top-coal block is found. Coal block distribution is the foundation of simulation test for coal block drawing.

通过块体顶煤的相似模拟放煤试验得出了顶煤块径大小、分布层位对顶煤回收率的影响规律，并得出了放煤工艺对顶煤分布特征的适应性规律。

On the one hand, it helps to reduce the resistance of feudalization to the development of capitalist coal-mining industry, and to encourage the investment in coal-mining industry from businessmen, so there came a boom of investment in Shanxi coal-mining industry, and that promoted the prosperity of coal-mining industry.

一方面，有助于减少封建制度对资本主义矿业发展的阻力，进而鼓励商民投资矿业，此后山西出现了投资煤矿的热潮，带动了近代山西煤矿业的发展。

Supporting type is suggested to be developed into 3-prop to improve adaptability besides 2-prop and 4-prop. The difference of caving difficulty degree of coal seam is the base of caving coal method at high, medium and low position. Caving with small step and open caving flashboard used widely not only cause serious mixture of coal and rock but also hinder the improvement of top coal recovery. So we suggest caving with large step or closing caving door. Four-bar-mechanism of hydraulic support restricts development of new style caving powered support. Stabilization framework of expansion link and all-shield caving tail beam at high, medium and low position are introduced here.

支架支护型式，除了两柱、四柱以外，建议开发三柱支架以改善适应性；煤层冒放性的差异，是高位、中位和低位放煤方法存在和使用的依据；目前广泛采用的小步距放煤和开放式放煤插板不仅造成严重混矸漏矸，也妨碍顶煤回收率的进一步提高，建议采用大步距放煤和可关闭放煤口；液压支架四连杆稳定机构，制约了新型放顶煤液压支架的开发，介绍了液压支架伸缩杆稳定机构及全掩护拖移高位、中位和低位放煤尾梁。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？