substitutional diffusion substitutional impurity atom substitution inertness substitution method substitution reaction 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 |
substitutional diffusion дифузия по вакантни места Търсената дума е намерена |