coal mining cities 煤炭资源型城市
coal-mining cities 煤炭城市实现
resources mining cities 资源型矿业城市
land of mining cities 矿业城市用地
industrial and mining cities 工矿城市
mining cities in west china 西部矿业城市
mining cities in central Liaoning 辽中地区矿业城市
mining area cities 矿区城市
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