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- His face and hands were covered with coal dust. 他的脸和双手沾满了一层煤灰。
- 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
- 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。
- Electric dust remover exclusively used for powder coal is mainly used for solving the problem of dust abatement during the preparation of coal powder and its transportation in thermal power stations. 煤粉专用电除尘器主要解决火力发电站的煤粉制备和输送系统的老大难问题的扬尘治理，具有广阔前景。
- 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。
- Reiable operation, no coal adhering and blockage. Good adaptability to various coal powder. 性能稳定可靠，不结粘、不堵粉，对煤粉适应性强。
- 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
- The method can prevent the unbalance phenomenon between the supply and demand of the coal powder effectively. 该方法可以有效地防止煤粉喷吹过程中出现的煤粉量供需不平衡等现象。
- 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
- Production process used in flammable explosive coal powder drying is empoldered. 开发出了应用于易燃易爆煤粉的一种干燥工艺。
- The comparison is made on the seepages of methane in coalbed core, sandstone core and coal powder core. 研究表明,煤层试样的渗透率受有效覆压的影响很大,其应力敏感性程度超过砂岩岩样。
- He moved the coal cakes away, and there was only coal dust left on the floor. 他把煤饼搬走了，地下只剩下一层煤末。
- It took me a whole afternoon to make this coal dust into coal cakes. 我用了一下午的时间把煤末做成了这些煤饼。
- Comparsion of safe application period of different material pipeline used for coal powder feeding at Thermal Power Plant. 火电厂送粉管道采用不同材质弯管安全使用周期对比。
