Conclusion: PM2.5 pollution is the most serious in winter, and the least in summer in Hangzhou city.
结论：杭州市区PM 2.5污染程度在夏季最轻，春秋季次之，冬季最严重。
Objective To understand the characteristics of indoor PM2.5 pollution in residential houses in Guangzhou.
目的了解广州市居民室内空气中PM 2.5的污染特征并探讨其污染来源。
The American Heart Association estimates that in the United States alone, PM2.5 air pollution spark some 60, 000 deaths a year.
美国心脏协会估计，仅在美国，被PM 2.5颗粒污染的空气就导致每年约60,000人死亡。
S. government about air pollution in Beijing, based specifically on PM2.5 particles, paint a different picture.
美国这些数据主要是关于直径2.5微米以下污染颗粒物的。
An orange alert means heavy pollution — PM2.5 higher than 150 — for three consecutive days.
橙色预警意味着连续三天的重污染，PM 2.5指数高于150。
PM2.5 is one of the critical pollutants involving regional and complex air pollution in Beijing.
中文摘要PM2.5是城市大气复合污染中的重要污染物。
The elements in Nanjing atmospheric PM2.5 might be classified into two great kinds of the types of earth crust and pollution elements mainly.
结果表明，南京市大气PM2.5中的元素主要可分为地壳元素和污染元素两大类。
China has vowed to launch its strictest environmental protection system and reduce the concentration of PM2.5 particulate pollution in cities with poor air quality by 18 percent by 2020.
中国已承诺施行最严格的环境保护条例，并预计在2020年之前将严重污染城市的PM 2.5颗粒污染浓度降低十八个百分点。
Pick to PM2.5 it can be suspended in the air for a long time, the higher its concentration in the air content, means, the more serious air pollution.
摘要PM2.5它能较长时间悬浮于空气中，其在空气中含量浓度越高，就代表空气污染越严重。
Pick to PM2.5 it can be suspended in the air for a long time, the higher its concentration in the air content, means, the more serious air pollution.
摘要PM2.5它能较长时间悬浮于空气中，其在空气中含量浓度越高，就代表空气污染越严重。
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