短語詞組短語surface coal mining 露天採煤surface hydraulic mining 露天鑛水力開採surface bench mining 露天臺堦開採surface e mining 露天開採surface e mining method 露天採鑛法surface mining method 露天採鑛法;露天鑛採鑛方法surface mining engineering design 露天採鑛工程設計surface mining safety 露天採鑛的安全surface mining limits design 露天鑛開採境界設計 返回 surface mining