d quark造句

• We could just as easily choose the d quark.
• It is broken by the different masses of the u and d quarks as well as by their different charges.
• Since the u and d quarks have similar masses, particles made of the same number then also have similar masses.
• Because the u and d quarks have similar masses, particles made of the same number of them also have similar masses.
• The success of the isospin model is now understood to be the result of the similar masses of the u and d quarks.
• For example, the rules above say that a contains a c quark and some combination of two u and / or d quarks.
• The exact specific u and d quark composition determines the charge, as u quarks carry charge + while d quarks carry charge  ".
• The exact specific u and d quark composition determines the charge, as u quarks carry charge + while d quarks carry charge  ".
• The exact specific u and d quark composition determines the charge, because u quarks carry charge + whereas d quarks carry charge  ".
• The exact specific u and d quark composition determines the charge, because u quarks carry charge + whereas d quarks carry charge  ".
• Pions are the lightest mesons ( and, more generally, the lightest hadrons ), because they are composed of the lightest quarks ( the u and d quarks ).
• It has been shown that the high Fermi energy making ordinary quark matter unstable at low temperatures and pressures can be lowered substantially by the transformation of a sufficient number of u and d quarks into strange quarks, as strange quarks are, relatively speaking, a very heavy type of quark particle.
• For example, the four Deltas all have different charges ( ( uuu ), ( uud ), ( udd ), ( ddd ) ), but have similar masses ( ~ 1, 232 MeV / c 2 ) as they are each made of a combination of three u and d quarks.