延庆

CH 4 is the main component of the escaping gas discharged from the anomalous site in Longqingxia reservoir, Yanqing County. It is mainly originated from biogenic reaction but not an earthquake precursor anomaly.

延庆龙庆峡水库翻花冒气异常释放的主要气体CH4来源于生物成因，而非地震前兆异常。

Through Badaling, Yanqing County , as to reach the northbound carriageway.

穿越八达岭, 经延庆县北行即可到达.

A Comparative Study on the Molar Attrition Rates in Taosi, Shangma and Yanqing Ancient Populations.

陶寺 、 上马、延庆古代人群臼齿磨耗速率的比较研究.

Bulbar flowers basically is produced distributing to wait in channelcloud county, door a mountainous area.

球根花卉主要生产分布在延庆县、密云县 、 门头沟区等山区.

Applying the reference area method, this paper estimated the consolidation potential for cultivated land in Yanqing County.

在GIS支持下，采用样区法测算了延庆县的耕地整理潜力。