ohm

n unit of electrical resistance 欧姆（电阻单位）.

officious, officiously, officiousness, offing, offish, offline, offprint, offset, offshoot, offshore, offside, offspring, oft, oft-times, often, ogle, ogre, ogrish, oh, Ohio, OHMS, oho, oil, oil rig, oil slick, oil well, oil-bearing, oil-colour (also `oil-paint), oil-fired, oil-painting, oil-palm, oil-tanker, oilcake, oilcan, oilcloth, oiled, oilfield, oiliness, oilskin, oily,