His face and hands were coverd with grime from the coal dust.

Matthew scrubbed the coal dust from his face.

马修擦掉了脸上的煤灰。

Air leak seriously influences coal face supersedure at second air road of Dongyi mining area.

东一采区二段风道小井漏风严重影响了采煤工作面的接续,制约采区巷道维修.

Coal rock body electric characteristic abnormity of the mine coal face relates coal mine safety production.

矿井工作面煤岩体的电性特征异常关系到煤矿安全生产.

The safe monitoring system on coal face is the nerve of safe production coal mine.

综采工作面的安全监测系统是煤矿生产的神经系统.

He has worked at the coal face for eight hours.

这矿工在工作面上已经干了八小时了.

Through researching on coal-bearing stratum in Shuanghua coal field, the usual coal formation rules are reviewed.

通过对双桦煤田含煤地层的研究,总结出了双桦煤田的一般成煤规律.

The formation and harm of spontaneous combustion in coal field are generally described.

煤层自燃形成的煤田火区是煤矿区重要灾害之一.

Through analysis on coal formation and system, expound the change regulation of Boli coal field.

通过对含煤建造及构造体系的分析,探讨了勃利煤田的变质规律.

In Zhunnan Jurassic coal-field, the spontaneous combustion of coal very serious, and there are long history.

准南煤田侏罗系煤层自燃严重, 火烧历史悠久.

Coal field burning does great harm to coal exploring, pit building and mine opening-up.

煤田火烧区的存在,给勘探 、 建井、开矿均带来一定的危害.

The coal field at Ying-Ke Station , coal mines around Taipei area were delivered here to transfer.

莺歌车站集煤场.三峡,新店的煤产均集中在此待转.

It is important for assessing to the quality of coal correctly during coal field geological prospecting.

正确评价煤质是煤田地质勘探工作中一项极为重要的工作.

Rivers have been Chaheji, Dry River, River coal field, Long River.

河流有直岔河 、 旱泉河 、 煤场河 、 龙沟河.

There are complex structure and fold developed in Longyong coal-field.

龙永煤田构造复杂,褶曲发育.

The dual line to the rock field and coal field.

通往落煤昌场和舍石场的复线.

How much coal gas can this gas tank contain?

这个煤气包能储存多少煤气?

In order to enlarge utilization coal gas resource, tamping coking process is adopted at Nangang.

介绍了南(昌)钢公司为扩大利用焦煤资源, 采用捣固炼焦工艺.

Linqing depression is one of the favorable areas of coal gas exploration in Shengli oilfield.

临清坳陷是胜利油区煤成气的有利探区之一.

Coal gas is produced by the gasification of coal.

煤气是由煤的气化作用得到的.

The article introduced the complexity of wastewater and disposal method during coal gas production.

本文叙述了煤气生产工艺废水中杂质的复杂性及处理方法和主要步骤.