This paper introduces the pollution status of environment air in Nordrhein-Westfalen in Germany from 1960, analyzes the reasons of making pollution and the protection measures adopted.
介绍了德国北威州1960年以来环境空气污染状况，分析了造成污染的原因以及所采取的防治措施。
This paper introduces the pollution status of environment air in Nordrhein-Westfalen in Germany from 1960, analyzes the reasons of making pollution and the protection measures adopted.
介绍了德国北威州1960年以来环境空气污染状况，分析了造成污染的原因以及所采取的防治措施。
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