The effective approach to lessen the pollution of coal gangue piles and improve the eco-environment of mining area is the greening of coal gangue dump.
矸石山绿化是减少矸石山污染，改善矿区生态环境的有效途径。
The effective approach to lessen the pollution of coal gangue piles and improve the eco-environment of mining area is the greening of coal gangue dump.
矸石山绿化是减少矸石山污染，改善矿区生态环境的有效途径。
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