| 1. | The yongding and daqing rivers meet near tianjin ...
永定河和大清河在天津附近合流。 |
| 2. | On the relationship between the yongding river and beijing city
论永定河与北京城的关系 |
| 3. | The junxiang wetland design in the upstream of yongding river , beijing
北京永定河上游军响湿地设计 |
| 4. | A study on the marsh environment of the yongding river , beijing city
北京市永定河河流湿地水环境现状研究 |
| 5. | Beijing will take the lead in entering the era of the recreation economy
清代永定河管理制度的建立与志书编纂 |
| 6. | Sedimentation and optimal operation of three gorge reservoir in yangtze river
永定河河口泥沙淤积对官厅水库供水的影响分析 |
| 7. | Borehole completion process of rock socketed piles for the piers of yongding river no . 2 bridge
永定河2号大桥桥墩嵌岩桩成孔工艺 |
| 8. | Experimental study on wind channel of effects of sand covered by seeded grass on sandy area of yongding river
永定河沙地播草盖沙效果的风洞试验研究 |
| 9. | The radiocarbon ages of charcoal and their implication derived from ciergou site along the haiyuan strike - slip fault
永定河上游晚更新世晚期以来的堆积阶地年代测定 |
| 10. | Weights of indexes can be obtained by binary comparison and quantification based on the importance of indexes
通过实际水质等级的级别特徵值计算，对北京永定河水质进行了模糊可变集合评价。 |
