北京PM2.5密度较之前降低
时间:2018-08-22 07:14:12
(单词翻译:单击)
New figures show the average density1 of PM2.5 in Beijing from January to July this year stands at 55 micrograms per cubic meter, down 14.1 percent from the same period last year, report local authorities.
最新数据显示,2018年一月至七月北京PM2.5平均密度为55毫克每立方米,比去年同期低14.1%。
Data released by the Beijing Municipal Environmental Protection Bureau shows the density of PM2.5 in July came in at 50 micrograms per cubic meter, down by 3.8 percent compared to the same month last year.
Also, from January to July, the average density of larger particles, PM10, is down by 9.6 percent.
Sulfur2 dioxide levels are down 30 percent, while nitrogen dioxide is down 13 percent compared with the same time frame last year.
As part of pollution control and
emission3 reduction programs, 548 manufacturing companies have been eliminated from Beijing as of the end of July this year. Beijing authorities have also removed 31,000
diesel4 trucks from the roads.
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1
density
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| n.密集,密度,浓度 |
参考例句: |
- The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
- The region has a very high population density.该地区的人口密度很高。
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2
sulfur
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| n.硫,硫磺(=sulphur) |
参考例句: |
- Sulfur emissions from steel mills become acid rain.炼钢厂排放出的硫形成了酸雨。
- Burning may produce sulfur oxides.燃烧可能会产生硫氧化物。
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3
emission
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| n.发出物,散发物;发出,散发 |
参考例句: |
- Rigorous measures will be taken to reduce the total pollutant emission.采取严格有力措施,降低污染物排放总量。
- Finally,the way to effectively control particulate emission is pointed out.最后,指出有效降低颗粒排放的方向。
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4
diesel
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| n.柴油发动机,内燃机 |
参考例句: |
- We experimented with diesel engines to drive the pumps.我们试着用柴油机来带动水泵。
- My tractor operates on diesel oil.我的那台拖拉机用柴油开动。
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