An ohm is a unit which is used to measure electrical resistance.
例句
...a resistance of 40 ohms.40歐姆的電阻
英漢詞典釋義
n.
<電>歐姆(電阻單位)
international ohm國際歐(姆)(等于1.000495歐)standard ohm標(biāo)準(zhǔn)歐姆
英英詞典釋義
Noun
1. a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere
行業(yè)詞典
醫(yī)學(xué)： 〔George S. Ohm，德國物理學(xué)家，1787～1854〕歐姆：電阻的公制單位，等于斷面為1／4毫米、長106厘米的汞柱的電阻，其符號(hào)為；