"focussing cups" in German focussing cups Wehnelt-Elektroden Wehnelt-Zylinder Detailed translations for "focussing cups" focussing cups focussing cups(also: modulating electrodes, modulator electrodes, Wehnelt electrodes, Wehnelt cylinders) Wehnelt-Elektroden{masculine plural} focussing cups(also: modulating electrodes, modulator electrodes, Wehnelt electrodes, Wehnelt cylinders) Wehnelt-Zylinder{masculine plural}