短語詞組短語subsidence e area 沉降面積surface subsidence area 地面塌陷;地表沉陷區(qū)dynamic subsidence area 動態(tài)沉陷區(qū)Coal extraction subsidence area 采煤塌陷地subsidence area ecological effects 塌陷地生態(tài)效應(yīng)subsidence area of goaf 采空塌陷區(qū)subsidence area of Hengshui 衡水mining subsidence area 采煤沉陷區(qū) 返回 subsidence area