1.
The Research on Yan'er Valley Vegetation Soil Moisture, Biomass and Biological Diversity
燕儿沟流域植被土壤水分生物量及生物多样性研究
2.
"There once was a man, sent on military missions, A wanderer, from youth, on the You and Yan frontiers."
男儿事长征, 少小幽燕客,
3.
Research on Yanzigou Scenic Area Tourism Development Project
燕子沟景区旅游开发项目的规划研究
4.
Effects of Vegetation Restoration on Soil Quality in Yangou Catchment in Hilly-Gully Region of the Loess Plateau;
黄土高原丘陵沟壑区燕沟流域植被恢复对土壤质量的影响研究
5.
Soil water environment and vegetation growth in the hilly and gully region of the Loess Plateau:a case study of Yangou Catchment
黄土丘陵沟壑区土壤水分环境及植被生长响应——以燕沟流域为例
6.
Analysis of Approach on Quick Construction of Eco agriculture in Yan Gully Demonstration Zone;
燕沟示范区生态农业快速规模化建设途径分析
7.
Land Use Change and Its Regulation of Yangou Watershed in Loess Hilly-gully Region;
黄土丘陵区燕沟流域土地利用变化与优化调控
8.
Research on the Landscape Actuality/Function and Dynamics of Yangou Watershed
燕沟流域景观格局现状、功能与动态研究
9.
Discussion on Gold Prospecting in Danba Yanzigou Gold Mine
丹巴燕子沟金矿构造地质特征及找矿前景
10.
Influence of Removal Lands From Cultivation to Afforestation and Grass Planting on Rural Social Economy in Loess Hilly-Gully Region in North Shaanxi: A Case Study on Xiannangou Watershed and Yangou Watershed;
大规模生态退耕对陕北丘陵沟壑区农村社会经济的影响——以县南沟和燕沟小流域为例
11.
Research of Dam Foundation in Yan erhe Reservior from the City of MianYang;
绵阳市燕儿河水库工程坝基处理研究
12.
Preliminary Study on the Geological Characteristics and Ore-controlling Factors of Yanzigou Gold Deposit in Danba,Sichuan Province
四川丹巴燕子沟金矿床地质特征及控矿因素初探
13.
Economic Response to the Small Catchment Management of Yangou Catchment in the Loess Hilly Region of Northern Shaanxi Province
陕北黄土丘陵区燕沟小流域综合治理的经济响应
14.
Soil heat and response of vegetation growth in the loess hilly and gully region:a case study of Yangou Catchment
黄土丘陵沟壑区农林草地土壤热量状况及植被生长响应——以燕沟流域为例
15.
This time the swallow took a closer look to find out where the water was coming from.
这一次燕子便瞧个仔细，看看水滴从哪儿来的。
16.
Humane Spirit of Hebei People Seen from May 12~(th) Earthquake Relief
从5·12抗震救灾中看燕赵儿女的人文精神
17.
Clinical application of pit and fissure sealant technique to prevente juvenile dental caries
窝沟封闭技术在儿童预防窝沟龋的临床观察
18.
Son：Didn't you say that's the saliva of swallows that makes the bird nest? How could you get it in this way?
儿子:你不是说燕窝是燕子口中分泌的的黏液吗?你这样要怎样收集呀?