refractive refractive exponent refractive index refractivity refractometer refractometry refractor refractories refractory refractory alloy refractory brick refractory cement refractory clay refractory concrete refractory-faced refractory lining refractory material refractory metal refractory mortar refractory setting |
refractive пречупващ рефракционен Търсената дума е намерена |