单词	晶体石
释义	晶体石医rock crystals
随便看	underground mill underground milling underground mine Underground mine underground mined caves underground mine development underground mined-out area Underground mined-out zone underground mine goal underground mine optimization Underground mines underground mine, tunnel Underground mine ventilation underground mine water supply underground mining Underground mining bed underground mining cavities underground mining, deep mining underground mining engineering underground mining environment Underground mining equipment underground mining from open pit underground mining from open-pit underground mining machinery Underground mining method