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quecksilberdampf - grossgleichrichter isolated cathode in which the ringfoermige kathodenisolator through an insulating and waermebestaendigen einsatzzylinder against local erwaermungen is protected
quecksilberdampf - grossgleichrichter isolated cathode in which the ringfoermige kathodenisolator through an insulating and waermebestaendigen einsatzzylinder against local erwaermungen is protected