查询词典 coal

However, years of a coal logistics constraints impeded the economic development of Shanxi coal resources.

然而，多年的煤炭物流不畅成了制约山西煤炭经济发展的&瓶颈&。

The paper introduces the computer interior management and drawing system on the engineering survey of coal mining and roadway driving. This system standardizes the computer interior management, intellectualizes drawing, storing, and editing. It is used well in Jinpushan Coal Mine.

介绍了煤矿采掘工程测量的计算机内业管理和绘图系统，该系统实现了矿井测量工作内业管理的标准化，实现了采掘工程图件的计算机绘制、存储和编辑的智能化，在晋普山煤矿实际应用效果良好。

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。

It is restricted by geologic setting of coal bed formation and geometric configuration of borehole to utilize multiple laterals horizontal well to develop coal bed methane resources.

1引言多分支井技术是在定向井、大位移井和水平井技术基础上，迅速发展起来的一项石油开采技术，它可以大大提高油藏的采收率，降低油藏开采综合成本，经济效益十分显著，应用前景十分广泛，是21世纪油气田开发的主体工艺技术之一。

This research is a new low cost method of producing abrasive grit. It is to put the iron ore concentrate, coal powder, hydrated limed and addition agent together to make coal mixed pellet in prior which is rapidly auto-reduced in high temperature and kept about 10min above 1350℃, and then furnace cooled. The 2CaO·SiO2 of slag phase change、volume increase and natural bloom in reduction process. Finally we obtain no-slag abrasive grit through screen separation , in which the iron yield can be above 90%,the sulfur content can be below 0.05% and carbon content is lower than 4.0%.

本研究是一种全新的低成本生产铁粒的方法，它是将铁精粉、煤粉、消石灰和添加剂预先制成球团，在高温下迅速加热还原，在1350℃以上保温10分钟后随炉冷却，渣相中2CaO·SiO2在冷却过程中发生相变，体积膨胀而自然粉化，通过筛分便可以得到不含炉渣的铁颗粒，铁的收得率在90%以上、S≤0.05%、C在4.0%左右。

In this thesis, the process and law of high temperature rapid liquefaction were studied during liquefying Yang cun coal and Sheng mu coal, moreover their reaction characteristics were discussed.

论文主要研究杨村煤和大柳塔煤高温快速液化的工艺条件及规律，探讨煤高温快速液化的反应特性。

Open Cast Coal Mine: when i was there, there are 18 locos same time working, about 30 locos running in the open cast coal mine.

露天矿：当我到这里来的时候，有18台SY同时工作在露天矿里。大约有30台SY运行在露。

From the "Great Harmony miners" to "with the coal-Daily"; from hand-carved version of mimeographed, typeface typography, to the computer editing, laser photo-typesetting; from published Monday, three to the Friday issue of Daily Journal; from monochrome color outside the small to report newspaper; from about a dozen editors to publish a newspaper reported that Indian unity, with coal, the newspaper 60 years has undergone enormous changes.

从《大同矿工报》到《同煤日报》；从手工刻版油印、铅字排印，到电脑采编、激光照排；从周一刊、三刊到周五刊日报；从单色小报到对开彩色大报；从十几名编辑办报到报印合一，同煤日报社60年发生了翻天覆地的变化。

On the basis of understanding of the coal, the utilization of coal is becoming more widespread.

在此基础上，对煤炭的利用日益广泛。

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。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。