建下煤炭资源
Coal resources under buildings
煤炭资源储量
coal resource and reserve
煤炭资源地质条件
coal resource geologic condition
煤炭资源管理系统
coal resources management system
煤炭资源开采
exploitation of coal resources
煤炭资源开发
coal resources exploitation
Coal resources development
coal resource exploitation
exploitation of coal resource
煤炭资源勘查
coal resources exploration
coal resource exploration
煤炭资源枯竭型城市
exhausted coal resource city