It is very necessary to determine the health protection zone in environmental impact assessment for nitrogenous fertilizer plant, but the research and introductions are less.
在氮肥厂环境评价中，确定卫生防护距离是非常必要的，而相关的研究、介绍却较少。
It is very necessary to determine the health protection zone in environmental impact assessment for nitrogenous fertilizer plant, but the research and introductions are less.
在氮肥厂环境评价中，确定卫生防护距离是非常必要的，而相关的研究、介绍却较少。
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