The Gruen zones is a system of dividing the interface between the femoral component of a hip arthroplasty and the femur bone moving from lateral to medial calcar, when viewing an AP radiograph of the hip, clinically useful to record the appearance of lucent areas when assessing the outcome of the operation.
This article is about the band. For other uses, see AC/DC (disambiguation). AC/DC are an Australian rock band, formed in 1973 by brothers Malcolm and Angus Young. A hard rock/blues rock band, they have also been considered a heavy metal band, although they have always dubbed their music simply rock and roll.
Report Abuse. There are a few parts to this: AC means that it runs on 'Alternating Current' - mostly mains (rather than batteries) 220 - 240V means that it wants a supply voltage of 220V to 240V, which unfortunately the US domestic electric supplies are 110V - 120V-which is a bit low.ou need an AC power source either in 50 or 60Hz,and voltage can be chose from 220 to 240 volts,and the power requires 250 watts.