Introduces the roadway gas drained technology for high gas mining face, it has resolved the gas control problems during primary mining face.
介绍了高瓦斯采煤工作面采用高抽巷抽放、尾抽巷抽放等专用巷道瓦斯抽放技术，解决了工作面初采期间的瓦斯问题。
Along with mining depth becoming deep and coal output increasing, the gas discharge increased, and gas problem of primary mining in coal face becomes important.
随着采煤深度的下延和产量的加大，瓦斯涌出量逐步增加，采煤工作面初采期间的瓦斯问题越来越引起重视。
Parallel rails had long been used in mining operations to move bigger loads, but horses were still the primary source of power.
在采矿作业中，平行铁轨早已被用来运送大件的货物，但马匹仍然是主要的运输工具。
But countries with significant primary industries, such as mining or forestry, tend to emit far greater quantities of greenhouse gases.
但是以初级工业为主的国家，比如说矿业和林业，却倾向于排放更多的温室气体。
Mining coal is one of primary factors to damage land resources, it not only decreases cultivated area, but also causes environment of mine destruction.
煤矿开采是对土地资源破坏的主要部分之一，不仅使耕地面积减少，而且造成矿区环境的破坏。
Belt conveyor is the primary continuous convey installation of mining enterprise, and compared with other convey installation, it has better economic benefit and lower convey cost.
带式输送机是采矿企业主要的连续运输设施，与其它输送设备相比，具有更好的经济效益和更低的运输成本。
Feature selection has abroad application in machine learning and data mining area, it is always applied as a primary pre-processing step.
属性选择通常作为一个主要的预处理步骤，在机器学习和数据挖掘领域有着广泛的应用。
The primary idea of this method is introducing the Immune Clone Selection Theory into the mining process.
其基本思路是将免疫克隆选择的概念引入挖掘过程当中。
For a long time, the safe mining of our country's coal resources has been seriously affected by a primary factor which is water inrush from coal seam floor.
长期以来，煤层底板突水一直是严重影响我国煤矿资源安全开采的一个主要因素。
This paper briefly introduces the results from primary research on solution mining of 5401 remnant ore.
本文简要地介绍了本溶浸研究组对5401残矿溶浸采矿初步研究结果。
The mining of weighted association rules is a primary method used in alarm correlation analysis.
加权关联规则挖掘是告警相关性分析的重要手段。
Our current industries include primary industry, like mining, secondary industry, like manufacturing, and tertiary industry, like the service industry.
我们现在的产业结构，第一产业(比如)开采业，第二产业，比如加工业，第三产业，(比如)服务业，这三个产业之间的关系。
Based on achieved rock movement parameters and experience of mining coal under buildings, determine a kind of optimum method of mining coal under village and take a primary approach.
通过结合矿区已获得的岩石移动参数和已有建筑物下采煤的经验，确定出一种村庄下采煤的最优方法，并进行了初步探讨。
Cementing agent, which is one of the primary cemented filling materials, plays a key role in the mining technique.
胶结剂作为胶结充填材料的主要材料之一，在矿山充填采矿工艺中占有重要地位。
This paper analyses the definition, method, grounds, process, significance, aim and primary valuing factors in mining right bidding.
简析了矿业权招投标的定义、方式和依据、程序、注意事项、意义、目的和必要性、主要评价因素。
Mining association rules is one of the primary methods used in telecommunication alarm correlation analysis.
关联规则挖掘算法是通信网告警相关性分析中的重要方法。
This paper presents a primary trial of data warehouse and data mining technologies in water supply system from many aspects, such as theories, system model and implement technique.
本文从理论、系统模式和实施技术等方面对数据仓库和数据挖掘技术在供水系统中的应用进行了一次初步的尝试。
There are four key industrial economic sectors: the primary sector, largely raw material extraction industries such as mining and farming;
有四个主要工业经济部门：初级部门，主要原材料的开采，如采矿业和农业；第二产业，涉及炼油，建筑，制造；
With strong ability of discovery of arbitrary shape clusters and handling noise, density based clustering is one of primary methods for data mining.
基于密度的聚类算法因其抗噪声能力强和能发现任意形状的簇等优点，在聚类分析中被广泛采用。
A primary programme of ventilation for the deep part of east mining district, which is instructive to the practice.
并对今后东部矿区深部采矿综合通风系统提出初步方案，有现实指导意义。
Based on the key stratum theory in ground control, the basic principle in the design of mining under buildings should ensure that the primary key stratum would not break.
在此基础上，提出将控制覆岩主关键层不破断失稳作为建筑物下采煤设计原则的观点。
The lateral overburden of faults is "wedge" shaped, and mining stress is lower than that of the stress of the primary rock.
断层外侧覆岩呈“楔形”，采动应力低于原岩应力。
The resources of natural rutile in our country is primary low-grade ore, eclogite-type rutile deposit is characterized as large, thick ore body, easy to exploration and mining.
我国天然金红石资源绝大部分为低品位的原生矿石，榴辉岩型金红石床具有规模大，矿体厚，易于勘探和开采等特点。
In 1950, the number of China's imports and exports was only a few billions of dollars, and exports products were mostly agricultural and primary industry and mining products;
1950年，我国的进出口总额只有几十亿美元，而且出口的大部分是农副产品和初级工矿产品；
As the main coal producing areas, land reclamation of coal mining areas in Laiwu city is still in primary step.
作为煤炭主产区的莱芜市，煤矿区的土地复垦还处在起步阶段。
As the main coal producing areas, land reclamation of coal mining areas in Laiwu city is still in primary step.
作为煤炭主产区的莱芜市，煤矿区的土地复垦还处在起步阶段。
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