open stope mining
open stope mining
[矿业英汉词典]
open stope mining空场采掘
是什么意思，open stope mining的解释，open stope mining的翻译
[地质英汉词典] open stope mining
open stope mining
[矿业英汉词典]
open stope mining是什么意思，open stope mining的解释，open stope mining的翻译
[地质英汉词典] open stope mining