This paper introduces a fuzzy mathematical method used in the evaluation and classifiction of the quality of mine air.
本文介绍了矿内空气质量评价及等级划分的一种模糊数学方法。
Flow Field Comparison and Analysis of Coal Mine Air Heater with Different Tube Bundles Based on FLUENT Software
基于FLUENT软件矿井空气加热器管束流场对比分析
The Application of Air Heating Units in the Mine Air Heating
空气加热机组在矿井井口空气加热中的应用
Foul or poisonous gas that sometimes pollutes the air in coal mines.
矿井瓦斯，有毒气体矿井中有时污染空气的恶臭气体或有毒气体
Assessment on Mine Air Quality Using Pollution Loss Rate
污染损失率法评价矿山井下空气质量
In some cases the difference in atmospheric pressure causes the air to circulate naturally; in others a fan must be used to pump air into the mine.
有些矿井利用大气压力差引起空气自然流动，有些矿井则必须用扇风机把空气压人井内。
A passageway or shaft in which air circulates, as in ventilating a mine.
通风道，换气坑空气流通的通道，如使矿井通风的风道
To admit fresh air into(a mine, for example) to replace stale or noxious air.
使通风，使空气流通使新鲜空气进入（如矿井）以替换不新鲜的或有毒的空气
Design of an Automatic Control Device of Mine Dedusting Water Curtain with Inspection of Air Turbidity
带有空气混浊度检测的矿井除尘水幕自控装置的设计
Calculation of Eccentric Wellbore Pressure Drop and Air Volume Requirements in Air Drilling
空气钻井偏心井筒压力及注气量计算
Application of Air Hammer in Gas Drilling in Puguang Gasfield
空气锤在普光气田气体钻井中的应用
A decision-making system of coordinated development between planning mines and constructing coal-bed methane wells
矿井规划与煤层气井建设协调发展决策系统
Mixtures of 5-14% methane in air are explosive and have caused many mine disasters.
空气中若混有5～14%的甲烷就有爆炸的危险,已经造成了许多矿井灾难。
Centrolized Control System of Underground Overhead Manned Cart
煤矿井下架空人车集中控制系统设计
The town is dead now the mine has closed.
因矿井已关闭, 镇上一片死气沉沉.
Theoretical study on calculation limits of CBM resource of abandoned coal mine
废弃矿井煤层气资源量计算范围研究
Abandoned Coal Mine Methane--A Noteworthy CBM resource
废弃矿井瓦斯——值得关注的煤层气资源
TREATMENT OF ACIDIC WASTEWATER FROM COAL MINE BY AERATION NEUTRALIZATION PROCESS
用曝气-中和法处理煤矿井下酸性废水
Control of Exhaust Pollutant of Flame Proof Diesel Engine in Underground Coal Mmines
煤矿井下防爆柴油机排气污染的控制