photoelectric door-opener photoelectric effect photoelectric element photoelectric emission photoelectric fatigue photoelectric ionization photoelectricity photoelectric magnitude photoelectric meter photoelectric metre photoelectric mosaic photoelectric photometer photoelectric pick-up photoelectric pyrometer photoelectric reader photoelectric reflectometer photoelectric relay photoelectric scanner photoelectric sorter photoelectric spectrophotometer |
photoelectric door-opener фотоелектрическо устройство за отваряне на врати Търсената дума е намерена |