查询词典 gas coal

A new dynamic model for simulation of gas flow in fissured coal is established based on lattice Boltzmann method, and is used to simulate two-dimensional gas flow in fissured coal.

基于Lattice Boltzmann方法建立一个新的模拟裂隙煤体内瓦斯渗流的动力学模型，并利用该模型模拟二维裂隙煤体内瓦斯流动。

This thesis keens on the DM utilizing research in coal mine gas forecasting. It is explained about domestic and outboard researching present conditions of time series data mining, time series analysis, formalized expression and model establishment of time series. Through analysising the features of coal mine gas observing data and several species of model. This thesis declares a suitable data and model ARMA.

本文的主要研究方向是时间序列数据建模及其在煤矿瓦斯预测中的应用研究，文中就时间序列数据建模的国内外研究现状、时间序列分析、形式化表示和时间序列的建模等进行了详细的论述，在分析了煤矿瓦斯监测数据的特点和多种模型的特征基础上，提出了本文所适用的数据模型为ARMA，同时，对特定的数据进行了数据建模，并对结果进行了分析和验证。

This device can simulate five kinds of coal and gas outburst experiments on coal beds with different obliquities, which are under the different gas pressures and geostresses.

2可实现5种不同倾角煤层在不同地应力、不同瓦斯压力下的煤与瓦斯突出模拟试验。

Using the RFPA~(2D)-Flow to simulating the process of the gas drainage in low air permeability coal bed by slot ting, it prove that slot ting is an efficient technique to reduce the risk of coal and gas out bursting.

运用岩石破裂分析系统(RFPA2D-Flow)模拟了割缝排放低透气性煤层内瓦斯的过程，验证了割缝排放煤层内瓦斯是降低低透气性煤层煤与瓦斯突出危险的有效方式。

Common form of 250,000 tons of coal washery coal washing products are used in Weishanhu Lake one-third of coking coal gas as raw materials, the coal with high heat. Low ash .

共同组建的25万吨洗煤厂洗选的精煤产品是采用微山湖三分之一气焦煤为原料，该煤具有发热量高。

This article according to mine pit coal mining to cause the principle which the mine shaft coal bed gas pressure reduces, taking the PanJiang mining area mining coal bed as the research object, it has analyzed the reserves and the saves condition which the PanJiang mining area coal bed was mad

本文根据矿井煤炭开采引起井下煤层气压力降低的原理，以盘江矿区开采煤层为研究对象，分析了盘江矿区煤层气的储量和赋存条件

Shell is working on clean energy in many different areas in China including coal gasification, coal to liquid s, natural gas, gas to liquid s

壳牌正在中国清洁能源领域进行多方面的努力，其中包括煤气化、煤制油、天然气、天然气制油和可再生能源。

Liquefied coal gas: refers liquid coal gas through compression.

液化煤气：是指压缩成液体的煤气。

In this paper, coal mine gas monitoring system in accordance with the actual needs, design and realization of a coal mine gas monitoring alarm short message platform.

本文根据煤矿瓦斯监控系统的实际需求，设计并实现了一个煤矿瓦斯监控短消息报警平台。

The feasibility of the relevant technical method is discussed to the problems such as lower heating value of the coal gas, the poor comprehensive use of the coal gas and so on.

针对现行低温干馏工艺存在的煤气热值低、煤气未完全回收综合利用等问题，讨论了相关技术措施的可行性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。