ultrasonic

The Guide aimed quickly and pressed the trigger of the ultrasonic stunner.

It carried an outsize ultrasonic generator and a device for directing the beam into the planet.

Most of them carried ultrasonic paralyzers, eighteen-inch batonlike things with bulbous ends.

Immediately, the ultrasonic paralyzers of the advancing paratimers went into action, and the mercenaries began dropping.

Has an ultrasonic dishwasher underneath, and it does some cooking on top, at the back.