substoping substoping-and-caving substractive mixture substratosphere substratospheric substratum substructure subsurface subsurface defect subsurface drain subsurface drainage subsurface excavation subsurface flow subsurface irrigation subsurface process subsurface water subsynchronous motor subtelegraphic telegraphy subtense subtense bar |
substoping мин. разработване с подетажни галерии Търсената дума е намерена |