surface coal mines的用法和樣例：
例句
- The evaluation of unreclaimed land productive potential in surface coal mine are keys for promulgating land reclamation planning in the mine.
露天煤礦待復墾土地生產潛力評價是編製土地復墾規劃的一個重要內容。 - The stability of composite slope, within first mining area in the 3rd Baiyinhua opencast coal mine, was analyzed.
摘要對白音華三號露天煤礦複合邊坡穩定性進行評價。
