Frequency up-shifting

pick-up up hay baler

boot-up speeding up

half built up crank shaft [= semi-built-up crank shaft

Hold Up And Stop Up Rotating

on the up-and-up

put up or shut up

sequence of train breaking up and making up

up-and-up

up-supply and up-discharge

up-supply and up-exhaust

WARM UP; WARMING UP

12-phase-shifting transformer

180° phase-shifting

3-phase thyristor phase shifting controller

90° phase-shifting

Absorption Peak Shifting

acousto-optic frequency shifting

acousto-optical frequency shifting