SIMPLE ANALYSIS ON THE EARTH STRESS OF MINING SLOW- DECLINING OREBODIES USING THE METHOD OF DOWNWARD HORIZONTAL LAYERING BACK- FILL MINING AND THE COUNTER- MEASURES THEREOF是什么意思_SIMPLE ANALYSIS ON THE EARTH STRESS OF MINING SLOW- DECLINING OREBODIES USING THE METHOD OF DOWNWARD HORIZONTAL LAYERING BACK- FILL MINING AND THE COUNTER- MEASURES THEREOF在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句