首页>
外国专利>
METHOD OF DETERMINING THE HEIGHT OF WATER-CONDUCTING FISSURES ABOVE EXCAVATED SPACE IN BED-TYPE DEPOSITS WITH AGED WATER-RESISTANT INTERLAYS INTERMEDIATE WATER-BEARING LAYERS
METHOD OF DETERMINING THE HEIGHT OF WATER-CONDUCTING FISSURES ABOVE EXCAVATED SPACE IN BED-TYPE DEPOSITS WITH AGED WATER-RESISTANT INTERLAYS INTERMEDIATE WATER-BEARING LAYERS