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Assessment of Current Status of Air Pollution Sources of the Coal Industry

Chapter III RESEARCH RESULTS 3.1. Assessment of current status of air pollution sources in the coal industry Dust is generated in almost all stages of mining technology. Dust affects the external environment mainly in the stages of transportation, screening, processing and consumption of coal. In ...

Tea Industry Vocabulary in Vietnamese - 29

Quantity 50 45 40 35 30 25 20 15 10 5 0 Insect element + 1 characteristic sign Insect element + 2 characteristic signs Insect element + 3 characteristic signs Figure 3.1.5. Identification method using insect-only elements for identification Quantity 60 50 40 30 20 10 0 Pest and disease indicators ...

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