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大连市科学技术局 大连市知识产权局

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大连市科学技术局 大连市知识产权局

From Feb.11 to 18 ,a period of traditional Chinese Lunar New Year, Dalian enjoyed much better air than last year. The average air pollutant index is 60, with chief pollutant being sulphur dioxide . On New Year's Day maximum index is 75 due to too much fireworks while the minimum value 40 came on Feb. 18. (Dalian Daily p.1,Feb.. 20,2002. )

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