短語詞組短語tailing pond safety assessment 尾礦庫安全評價tailing pond information 尾礦庫信息Boron tailing pond 硼礦區(qū)closure of tailing pond 尾礦庫閉庫18th river tailing pond 十八河尾礦庫small tailing pond 小型尾礦庫water dam of tailing pond 尾礦庫擋水壩major hazardinstallations of tailing pond 尾礦庫重大危險源 返回 tailing pond