double-grid valve double half-round file double-handed double-headed double-headed capstan double-headed nail double-headed rail double-header double-header boiler double-head wrench double-helical gear double-helical tooth double-hopper bin double-hulled double-humped resonance double-hung counterbalanced window double-hung window double image double inlet double-insulated conductor |
double-grid valve двурешетъчна електронна лампа тетрод Търсената дума е намерена |