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Experimental Study of Coal Dust Pollution of Railway Tunnel 铁路隧道煤扬尘污染规律试验研究
In view of coal dust polluting condition of coal handling environment, this paper utilizes the spraying and dust settling method to improve the coal handling environment thoroughly. 针对煤炭装卸环境中的煤粉尘污染状况，运用喷雾降尘方法，使煤炭装卸环境得以根本的改善。
coal dust pollution 扬尘污染
His face and hands were covered with coal dust. 他的脸和双手沾满了一层煤灰。
A conclusion is drawn that dust pollution of coal warehouse bottom is caused by haulage wind flow, inducd wind flow and impact wave wind flow. 研究发现，毛煤仓仓下粉尘污染主要是由皮带牵引风流、落料诱导风流和空气冲击波风流造成的。
A conclusion is drawn that dust pollution of coal warehouse-top is comprised by haulage wind flow, inducement wind flow and impact wave wind flow. 研究发现，毛煤仓仓顶粉尘污染主要是由皮带牵引风流、落料诱导风流和空气冲击波风流造成的。
His face and hands were covered with grime from the coal dust. 他的脸和双手沾满了一层煤灰。
A block of compressed coal dust, charcoal, or sawdust and wood chips, used for fuel and kindling. 煤砖，炭砖把煤灰，木炭或锯木灰和木片压缩制成的砖块状物，用作燃料和点火
In order to put forward effective dust control measures for coal warehouse bottom, it is necessary to analyze dust pollution mechanism. 摘要为了对毛煤仓仓下粉尘污染提出有效治理措施，需要掌握毛煤仓仓下落煤过程粉尘析出机理、逸散规律。
His face and hands were coverd with grime from the coal dust. 他的脸和双手都沾满了煤灰和污垢。
Production workmanship system and dust pollution mechanism of the transshipment point in ZhunGeer coal Washery have been clarified. 以准能公司选煤厂为例，对其生产工艺系统和转运点污染机理进行了分析。
He became ill after breathing in a lot of coal dust. 他吸入大量的煤灰之后病了。
The modern city consists of monstrous edifices and of dark narrow streets full of petrol fumes, coal dust, and toxic gases. 现代城市是由大得怕人的大厦和充斥着难闻的汽油味，煤灰和有毒气体和又阴暗又狭窄的街道所组成。
He became ill after breathing coal dust for many years. 他因多年吸入煤灰而生病了。
His face and hands were covered with grime from the coal dust . 他的脸和双手沾满了一层煤灰。
Coal worker's pneumoconiosis results from inhalation of coal dust. 煤炭工人的煤尘肺是由吸入煤矿粉尘引起。
He carried out trial runs using rockets stuffed with coal dust. 他用填满煤粉的火箭式烟火装置来进行试验。
Control on the dust pollution in metallurgical and cement production will be tightened with special focus on the fugitive discharge. 加强冶金、水泥生产粉尘污染控制，重点防治无组织排放。
Waste from anthracite coal mines,consisting of fine coal,coal dust,and dirt. 无烟煤废渣无烟煤煤矿的废弃物，由细粒无烟煤、煤尘和尘土构成
In order to solve the dust pollution and dust explosion dangerous caused by PTA manual feeding, modification was carried out on the PTA feeding system. 摘要为解决PTA人工投料带来的粉尘污染，带来粉尘爆炸的危险，对们认投料系统进行了改造。