1. 废石：岩体:Rock | 废石:waste rock | 围岩:surrounding rock
2. 废岩：terrestrial flora and vegetation 陆地植物区系和植被 | waste rock 废岩 | groundwater abstraction 地下水提取
3. 矸石：vent hole 出气孔 | waste rock 矸石 | water gas shift reation 水汽变换反应
1. waste rock的意思
1. Burning coal concentrates the uranium in the waste, and production of phosphoric acid from high uranium content phosphate rock removes the uranium.