说明：北京地铁行业相关产业有哪些？主要分布如下：Cheng Shi Gui Dao Jiao Tong占9.0%，Gui Dao Jiao Tong占8.4%，Transportation Transportation占6.8%，Transportation占6.2%，City Track Road占4.3%，Wu Liu / Transportation占3.4%，Metro Operations占3.1%，Machines Field占2.8%，Cheng Shi Gong Jiao占2.5%，Transportation Operations占1.9%，根据企业库算法分析，仅供参考。
