单词	Ac tr
释义	Ac tr 象透光高积云
随便看	mining of coal mine mining of continental shelf deposit mining of gas mining of green conserving water mining of groundwater Mining of hazardous mineral mining of heavy-water deposit mining of mineral deposits mining of near-span coal seam mining of phosphate body mining of shaft coal pillar mining of spontaneous combustion deposit mining of thin coal seam mining opencast mining opencut mining open pit mining operation mining operations mining optimization mining option right mining order mining ordering rules mining ore grade mining out area mining-out area