| 单词 | ohm |
| 释义 | ohm noun[C] physicsspecializeduk/əʊm/us/oʊm/thestandardunitofelectricalresistance 欧姆（电阻单位）Electricity - units
ohm| American Dictionaryohm noun[C] us/oʊm/science thestandardunitofelectricalresistance(= thedegreeto whichelectricalflowisprevented) Examplesofohmohm All impedances were maintained below 5000 ohms and were checked before and after testing. From theCambridge English Corpus Such a theoretical device would have a zeroohmoutput impedance in series with the source. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Artifact standards are still used, but metrology experiments relating accurately-dimensioned inductors and capacitors provided a more fundamental basis for the definition of theohm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The radiation resistance is typically a fraction of anohm, making the elementary doublet an inefficient radiator. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.A 21 divider probe consists of a 1000ohmseries resistor and a short 50ohmtransmission line. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.From 1900 the mercuryohmwas replaced with a precision machined plate of manganin. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Values ranged from fractions of anohmto 22 megohms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The definition of theohmunit was revised several times. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Impedances are 75ohmsingle-ended, and 150ohmdifferential. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These probes are also called resistive divider probes, since a 50ohmtransmission line presents a purely resistive load. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Electron mobility measurements surpassing one million correspond to a sheet resistance of oneohmper square -- two orders of magnitude lower than in two-dimensional graphene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The 1893 system had three base units: the international ampere, the internationalohmand the international volt. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This high-frequency resistance may vary over a wide range (from 0.1ohmto 10 k in some cases; the useful range is smaller, though). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.A matching transformer should be inserted between any such low-impedance transmission line and the higher 470ohmimpedance of the antenna. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The antenna has very low radiation resistance (less than oneohm) and will rarely be utilized for transmitting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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