Three Class of Reserves of [underground] mine_煤炭科技英汉词典
Three Class of Reserves of [underground] mine
[煤炭科技英汉词典]
Three Class of Reserves of [underground] mine[矿井]三量
矿井开拓煤量、准备煤量和回采煤量的总称，是反映矿井生产准备状况的宏观指标。
是什么意思，Three Class of Reserves of [underground] mine的解释，Three Class of Reserves of [underground] mine的翻译
