| 1. | 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，煤灰和有毒气体的又阴暗又狭窄的街道所组成。
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| 2. | He became ill after breathing coal dust for many years
他因多年的吸进煤灰而生病了。
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| 3. | Enclosed case decreases pollution by coal dust
采用密闭壳体，粉尘污染小。
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| 4. | Research and control of coal dust in fully mechanized face
综采工作面煤尘的研究与治理
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| 5. | Coal dust weight control system of the rotary kiln
回转窑煤粉计量控制系统
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| 6. | Study on dna damage induced by coal dust in vitro
损伤作用的体外实验
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| 7. | 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。
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| 8. | Performance optimization of coal dust extraction
粉尘浓度可降低至
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| 9. | Study of influence of coal dust on low - concentration gas explosion
煤尘对低浓度瓦斯爆炸的影响研究
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| 10. | Health standard for respirable coal dust in the air of workplace
作业场所空气中呼吸性煤尘卫生标准
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