长安县

陕西省长安县农村中小学生1990～1999年营养状况

Nutritional Status of Village Students in Chang'an County , 1990 ~ 1999

目的了解长安县7～18岁农村学生的营养状况。

Objective To study nutritional status of village students aged 7 ~ 18 years in Chang'an county .

论生态文化与村镇规划的可持续发展&以陕西省长安县大王乡为例

Discussion on Sustainable Development of Ecological Culture and Village and Town Planning

长安县梁氏家藏清代15道圣旨现世

The Liang family display fifteen Qing Dynasty imperial edicts

长安县黄土中的风化壳与环境研究

Research on environment and weathering crusts in loess of Chang ′ an area

长安县的林业建设实质是西安特大城市的基础设施建设

The central point of Changan county 's forestry construction is the infrastructure construction of xi ' an City

根据作者的观察和测量，文章对长安县少陵塬区土壤侵蚀特征和侵蚀规律进行了研究。

On the basis of authors observation and survey , soil erosion characters and erosive regularity were studied for Shaoling tableland of Chang an County .

结论10年来长安县农村学生的视力发育状况总体上是良好的，但视力低下率随学习阶段增长速度加快。

Conclusion The 10-year eyesight of the students is good on the whole , but the rate of students ' mal-eyesight increased speedily with the advancement of the studying stages .

通过对西安东郊和长安县黄土剖面野外考察、裂隙观察、统计测量、孔隙度测定和颗粒分析，系统地研究了黄土地层含水空间。

On the basis of field investigation , porosity determination and particle size analysis of the loess in eastern suburb of Xi ′ an and Chang ′ an County , the water bearing space of loess strata has been studied .