double-suction impeller double-suction pump double superheterodyne receiver doublet doublet antenna double-tapered muff double-tariff meter double-tariff metre doublet-casing turbine double tee double-threaded screw double-throw contact double-throw crankshaft doublet impulse double-t iron double-toggle actuator double toolholder double track double-track heading double-track railway |
double-suction impeller работно колело на помпа с двустранно всмукване Търсената дума е намерена |