Now, we've noticed PM2.5, which has long been neglected.

1、

Conclusion: PM2.5 pollution is the most serious in winter, and the least in summer in Hangzhou city.

结论：杭州市区PM2.5污染程度在夏季最轻，春秋季次之，冬季最严重。

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2、

PM2.5 Concentrations in Indoor and Outdoor Air and Their Relationship in the Fall of Beijing

北京秋季室内外PM2.5污染水平及其相关性

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3、

The level relativity between CO and PM2.5 is related to stove type and fuel type.

CO和PM2.5水平之间的相关性与炉灶类型和燃料类型有关。

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4、

This kind of channel has a higher cumulative efficiency for removing inhaled PM2.5 than usual channel through calculation.

经过计算，该类型通道比一般管通道有着较高的脱除可吸入颗粒物的效率。

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5、

Physical and Chemical Characteristics and Source Apportionment of PM2.5 in Nanjing

南京市PM2.5物理化学特性及来源解析

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6、

The PM2.5 index, for examples.

比如去看看PM2.5的指数。

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The article also said the density of PM2.5 generally peaks in winter and drops during summer.

文章还称PM2.5浓度的最高值一般在冬季，夏季期间有所下降。

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8、

Role of Nuclear Factor-kappa B Activation in Inflammatory Effect Induced by PM2.5 from Beijing Urban Area in A549 Cells

北京城区大气细颗粒物对肺腺癌细胞炎性作用及NF-кB表达的影响

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9、

To research the possible heart lesion of sensitive individuals exposed to PM2.5 in short term.

了解敏感个体急性暴露PM2.5可能出现的心脏损伤。

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10、

Prospect and advances in growth of PM2.5 from combustion by vapor condensation

蒸汽相变促进燃烧源PM2.5凝并长大的研究现状及展望

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11、

Experimental Study on the Enrichment of Ni, Cu Etc. in PM2.5 in Fly-ash

燃煤飞灰PM2.5中Ni、Cu等富集规律的实验研究

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12、

Experimental Study on the PM2.5 Agglomeration of Coal-fired Fly Ash in Magnetic Field

燃煤飞灰中可吸入颗粒物在磁场中聚并收尘试验研究

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13、

Progress in Technology of Electrostatic Enhancement for Removal of PM2.5

静电增强脱除PM2.5研究进展

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14、

Beijing saw a sharp decrease in the density of PM2.5 pollutants last year.

北京去年PM2.5污染物浓度大幅下降。

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15、

Purpose To study the relation between air particulate matter 2.5 ( PM2.5) and sarcoidosis.

目的探讨空气细颗粒物（PM2.5）与结节病之间的关系。

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16、

The most direct influence people's life from the air is its everyday quality, hence the API ( Air Pollution Index) is of considerable importance.

大气污染最直接影响到人们的生产生活的就是每日的空气质量状况，空气污染指数API（Air Pollution Index）是关系大众生产生活的一个重要指标。

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17、

The total number of respiratory outpatients grow with the increase of air pollution index in winter in the area.

2该地区冬季呼吸道疾病的就诊人数与空气质量有关，呼吸系统疾病门诊患者总就诊人数随着空气污染指数增加而增多。

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18、

The Application of Set Pair Analysis on City Air Pollution Index Forecasting

集对分析在城市空气污染预报中的应用研究

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19、

Application of CAPPS in the numerical prediction operational system of multi-city air pollution index

CAPPS在国家气象中心多城市污染指数数值预报业务系统中的应用

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We analyse the change of the air pollution index ( API) value as well as the number of days of different air quality according to the air quality reports released by the local environmental protection department in the corresponding period.

同期当地环境保护部门公布的空气质量报告，分析空气污染指数（API）的数值变化，出现不同空气质量的天数。

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