In this paper, infant mortality in Yangcheng County in Shanxi Province in 1987 was analyzed.
youdao
2. 论述了水资源保护的重要性，分析了阳城县水环境污染状况，并提出了相应的防治对策。
This paper expounds the importance of the protection of the water resources, analyzes on the water pollution situation in Yancheng County, and advances some corresponding preventive countermeasures.
youdao
3. 论述了水资源保护的重要性，分析了阳城县水环境污染状况，并提出了相应的防治对策。
This paper expounds the importance of the protection of the water resources, analyzes on the water pollution situation in Yancheng County, and advances some corresponding preventive countermeasures.
