2018北京PM2.5平均密度有所下降
文章来源:未知 文章作者:enread 发布时间:2018-06-08 07:11 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
The average density1 of PM2.5 in Beijing from January to May was 58 micrograms per cubic meter, down 18.3 percent year on year, the Beijing Municipal Environmental Protection Bureau announced Thursday.
 
北京市环保局周四宣布,1月至5月北京PM2.5平均密度为58微克每立方米,年同比下降18.3%。
 
In May, the average reading of PM2.5, airborne particles measuring less than 2.5 microns, stood at 54 micrograms per cubic meter, up 8 percent from a year ago.
 
In the first five months, authorities fined the owners of more than 117,700 heavy-duty diesel2 vehicles for excessive emissions3, twice the total number fined last year. In May, six construction sites were fined for failing to control dust.


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1 density rOdzZ     
n.密集,密度,浓度
参考例句:
  1. 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。
  2. The region has a very high population density.该地区的人口密度很高。
2 diesel ql6zo     
n.柴油发动机,内燃机
参考例句:
  1. We experimented with diesel engines to drive the pumps.我们试着用柴油机来带动水泵。
  2. My tractor operates on diesel oil.我的那台拖拉机用柴油开动。
3 emissions 1a87f8769eb755734e056efecb5e2da9     
排放物( emission的名词复数 ); 散发物(尤指气体)
参考例句:
  1. Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
  2. Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
TAG标签: vehicles emissions PM2.5
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