越来越严重的山火也带来了许多健康威胁，因为山火燃烧后的排放物中含有汞金属以及可以引起呼吸系统疾病的微小颗粒状物质，特莱特·斯基说。
More severe burning also raises a number of health concerns, as fire emissions contain mercury and particulate matter that can cause respiratory issues, said Turetsky.
实践证明在应用此系统后，煤粉浓度的在线监测与控制有利于煤粉充分燃烧，并取得了很好的节能效果。
With it running in a thermal plant , it has achieved remarkable success in saving energy, coal powder completely burning and controlling coal concentration and primary air velocity.
实验表明，采用新设计的预燃室燃烧系统后，发动机综合性能有较大的改善。
The experimental results show that the engine performance is enhanced greatly when a new designed combustion system is adopted.
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