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单词 dipole
释义
dipole
noun[C]
uk
/ˈdaɪ.pəʊl/us
/ˈdaɪ.poʊl/

dipolenoun[C](IN SCIENCE)

physicsspecialized
twopolesthat haveoppositeandequalelectricalchargeormagneticforce, with aspacebetween them:
偶极子
GeomagneticSouthPolerepresentstheaxisof the Earth'smagneticdipole.地磁南极代表地球磁偶极子的轴。
chemistryspecialized
amoleculewith anareaofnegativechargeand anareaofpositivechargethat areseparated:
偶极子
Manymolecules(such as those ofwater) areelectricdipoles,meaningthat they have apartialpositivechargeat one end and apartialnegativechargeat the other.许多分子（例如水分子）都是电偶极子，也就是说分子的一端含部分正电荷，另一端含部分负电荷。
More examples
  • By Maxwell'stime, it wasclearthat theelectromagneticfieldwas themeansby whichelectricalchargesandmagneticdipolesacton each other at adistance.
  • If the dipolarity of thegeneratorin thepowersystemislost,mechanicalenergyhas to befedinto theshaftof thegeneratorstorestorethe dipole.
  • Thecentreofpositivechargedoes notcoincidewith thecentreofnegativecharge; we say that thebondispolaror that it has a dipole.
  • ThebentmoleculeH2O has a dipole, but thelinearCO2(O=C=O) does not.
SMART Vocabulary: related words and phrases
Physics: energy, force & power
  • anti-gravity
  • attract
  • attraction
  • bar magnet
  • barometric pressure
  • dynamo
  • fundamental force
  • G-force
  • gravitational
  • high-impact
  • incident
  • meltdown
  • propulsion
  • stored energy
  • surface tension
  • thermodynamic
  • transduce
  • transduction
  • unexcited
  • unipolar
See more results »

You can also find related words, phrases, and synonyms in the topics:

Physics: atoms, molecules & sub-atomic particles

dipolenoun[C](FOR RADIO)

(alsodipole antenna)
asimpletypeofradioaerial(= astructurethatreceivesorsendsoutradiosignals)that isshapedlike theletterT:
偶极子天线
With most FMradiostationstoday, averticaldipole gives as muchsignalas ahorizontalone.对如今大多数的调频广播电台来说，垂直偶极子天线和水平偶极子天线发出的信号的强度是一样的。
picture of dipole
ubonwanu/iStock/Getty Images Plus/GettyImages
More examples
  • The world's firstradioastronomer, hepresidedover afieldof dipoles (antennas) 3,500feetindiameterwhilecontinuinghisprivateresearch.
  • I use a 440mHztransmitterradiowith a 6.5"horizontaldipoleantenna.
SMART Vocabulary: related words and phrases
Broadcasting: radio
  • am
  • antenna
  • anti-jamming
  • anti-radar
  • autotune
  • bandwidth
  • beacon
  • CB
  • LW
  • medium wave
  • multi-wavelength
  • multichannel
  • MW
  • RDS
  • receiver
  • short wave
  • shout-out
  • tranny
  • transponder
  • tuner
See more results »
(Definition ofdipolefrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

Examplesofdipole

dipole
The transverse electrostatic field in the pore resulted in a high degree of alignment of the water dipoles.
From theCambridge English Corpus
Adipole-like model of the geomagnetic field was used.
From theCambridge English Corpus
These coordinates provide a standardized coordinate system for the dipoles across the participants.
From theCambridge English Corpus
We substitute (4.8) and (4.9) into (2.14) and (2.18) for the forcedipole.
From theCambridge English Corpus
In systems with substantial compressibility, however, such as a levitateddipole, all low-frequency modes can be stable.
From theCambridge English Corpus
The trajectories of two group of dipoles located every half wavelength apart in the vertical are nonetheless clearly visible.
From theCambridge English Corpus
In the case of an axially symmetric vortex, the newly formed dipoles diverge in arbitrary directions, whereas here it is predetermined by the initial configuration.
From theCambridge English Corpus
Note that the effect of any non-zero streaming is to introduce adipoleinto the electric field, far from the grain.
From theCambridge English Corpus
The study indicates that the intensity-dependent phase of the atomicdipoleshould play a major role in the spatial coherence proper ties of harmonic emission.
From theCambridge English Corpus
Furthermore, intra-pore waters oriented themselves with their dipoles anti-parallel to the helix dipoles, as did the hydroxyl groups of serine residues.
From theCambridge English Corpus
To this end, rotational constants,dipolemoments and infrared frequencies were calculated.
From theCambridge English Corpus
It can be conjectured that in this case the electric field is too weak to prevent breakthrough caused by the hydrodynamicdipole.
From theCambridge English Corpus
We suppose that this can be connected with the possibility for thedipolevortex to trap free drift waves.
From theCambridge English Corpus
In this article we present the first observations of lowfrequency quasi-coherent modes in adipoleand the conditions under which these modes are seen.
From theCambridge English Corpus
This constrained the locations of the dipoles to a realistic topography based on individual participant data.
From theCambridge English Corpus
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.
#https://dictionary.cambridge.org//dictionary/english/dipole##
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更新时间：2025/2/10 21:53:10