北京钢铁设计研究总院  Beijing Iron and Steel Designign and Research Institute

镜铁山铁矿床  Jingtieshan iron deposit

铁矿铁矿  iron ore

北京北大方正软件技术学院；北京市测绘设计研究院  peking university founder technology college

北京北二环  North Second Ring Road of Beijing

北京京城中水有限责任公司  beijing jingcheng recaimed water co.; Ltd.

北京京之杰广告有限公司  beijing jingzhijie advertisement co.; Ltd.

北京矿产地质研究所  Beijing Institute of Geology for Mineral Resources; Beijing Research Institute of Mineral Resources and Geology

北京矿产地质研究院  Beijing Institute of Geology and Mineral Resources; Beijing Institute of Geology for Mineral Resources

北京矿冶研究总院  444

北京山地  Beijing mountain areas; beijing mountains

北京山区  Beijing mountain area; Beijing mountainous region; mountainous area of Beijing; Beijing mountainous area; Beijing mountainous areas; Beijing mountain region; mountain areas of Beijing; the mountain area of Beijing city; Beijing mountain; hills in Beijing; mountains in Beijing

北京首都机场  beijing capital international airport

北京首都绿化委员会  beijing capital greening commission

北京首云铁矿  beijing shouyun iron ore

北京铁角蕨  Asplenium pekinense Hance

北京铁路地下直径线  beijing railway underground connecting line

北京铁路分局  Beijing Railway Sub-administration

北京铁路疾病预防控制所  Diseases Control and Prevention Centers of Beijing Railway Bureau