mined- out areas

• 采空区

mined- out areas的用法和样例：

例句

1. High density electrical method and seismic imaging method are adopted to detect the mined-out areas in the Gongchangling opencut iron mine in Liaoning Province.
   摘要介绍了应用高密度电法与地震映象法对弓长岭露天铁矿采空区进行探测的方法技术及应用效果。