单词	quark
释义	quarkquark /kwɑːk, kwɔːk $ kwɔːrk, kwɑːrk/ noun [countable] Word Origin WORD ORIGINquark Origin: 1900-2000 Invented by Murray Gell-Mann (born 1929), U.S. scientist, based on the phrase "three quarks for Muster Mark" in Finnegans Wake (1939) by James Joyce; because originally there were thought to be three quarks Examples EXAMPLES FROM THE CORPUS A proton contains two up quarks and one down quark; a neutron contains two down and one up. Each generation has four members: two quarks, an electron-like particle and a neutrino. If the world had been created without the exclusion principle, quarks would not form separate, well-defined protons and neutrons. Some fromagefrais and quark have a longer shelf life and may be kept for a week or ten days after purchase. Stir in the quark to thicken the sauce. This means that gluons for some reason produce jets that are more spread out than the ones that originate from quarks. This was the point of explaining cars in terms of carburettors rather than quarks. What happens is that a matter particle, such as an electron or a quark, emits a force-carrying particle. word sets WORD SETS► Physics aether, nounamplitude, nounantimatter, nounantiparticle, nounastrophysics, nounatom, nounatomic, adjectiveattract, verbattraction, nounballistics, nounbeam, nounblack hole, nounbuoyancy, nouncalorie, nouncalorific, adjectivecapillary action, nouncathode ray tube, nouncentre of gravity, nouncentrifugal force, nouncentrifuge, nouncentripetal force, nounchain reaction, nouncondensation, nounconduct, verbconduction, nounconductive, adjectiveconductor, nounconvect, verbconvection, nouncore, nouncritical mass, noundemagnetize, verbdense, adjectivedensity, noundisplacement, noundynamic, adjectiveelectron, nounelementary particle, nounfallout, nounfissile, adjectivefission, nounfocus, verbfrequency, nounfriction, nounfusion, noungamma ray, noungravitation, noungravitational, adjectivegravity, nounhalf-life, nounhertz, nounhydraulic, adjectiveHz, imaging, nounimpetus, nouninertia, nouninvariable, adjectiveion, nounionize, verbkinetic, adjectivelaser, nounlift, nounliquefaction, nounliquefy, verblodestone, nounmagnet, nounmagnetic, adjectivemagnetic field, nounmagnetism, nounmagnetize, verbmass, nounmechanical, adjectivemedium, nounmeltdown, nounmomentum, nounmotive, adjectivemushroom cloud, nounnatural philosophy, nounneutron, nounNewtonian, adjectivenuclear, adjectivenuclear fission, nounnuclear fusion, nounnuclear physics, nounnuclear reactor, nounnucleus, nounoptical fibre, nounparticle accelerator, nounparticle physics, nounphonic, adjectivephosphorescence, nounphosphorescent, adjectivephoto-, prefixphoton, nounphotosensitive, adjectivephotosensitize, verbphysical, adjectivephysicist, nounphysics, nounpivot, nounpolar, adjectivepole, nounpotential energy, nounpower, nounpressure, nounpropulsion, nounproton, nounpull, nounquantum mechanics, nounquantum theory, nounquark, nounradiate, verbradiation, nounradio wave, nounray, nounreaction, nounreactor, nounreflect, verbreflector, nounrefract, verbrelativity, nounrepel, verbrepulsion, nounrepulsive, adjectiveresilience, nounresilient, adjectiveresistance, nounresonance, nounretention, nounsolid-state, adjectivesonic, adjectivesonic boom, nounsound wave, nounspace, nounspecific gravity, nounspectral, adjectivespectroscope, nounspectrum, nounstatics, nounsteady state theory, nounstrain, nounstress, nounsurface tension, nountension, nounthermodynamics, nounthrust, nountraction, nountrajectory, nountransmit, verbultrasonic, adjectiveultrasound, nounvacuum, nounvaporize, verbvapour, nounvector, nounwave, nounwavelength, nounwork, noun technical a very small part of something, which is smaller than an atom
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