东营房

东营房东营房
  1. 蓟县山前土壤氡浓度与断裂和地热关系研究天津市蓟县东营房叠层石矿的开发利用研究

    Research on the Relationship between the Soil Radon Density and Fault and Geotherm at the Foreland of Jixian Mountain , Tianjing