pion
英
美 [ˈpaɪˌɑn]
n. π介子
复数：pions
COCA.31659
双语例句
- Pion interferometry for asymmetric partially coherent sources
部分相干源不对称性的π干涉学分析 - Imaging Analysis of Pion Source of Smoothed Particle Hydrodynamics Model
光滑粒子流体动力学模型发射π介子源的视像分析 - Two photons are created in the decay of the neutral pion.
双光子是在中性兀介子衰变中产生的。 - The scattering of elastic collision in exchanging four-dimensional momentum and energy between nuclear ( proton, neutron) and neutral pion was solved by using potential model and adopting quantum mechanics in nucleus physics.
对于核物理中核子（质子、中子）与中性介子π0交换四维动量&能量的弹性碰撞散射问题，核物理所作的处理是基于各种位势模型并采用量子力学的方法来研究。 - The couplings of Δπ N and π NN are calculated by employing the relativistic quark model incorporated with pion meson cloud.
通过相对论夸克模型并结合介子云的贡献，计算了ΔπN耦合常数以及πNN耦合常数。 - In the framework of Glauber theory the recent pion inelastic scattering data on~ ( 12) C at 800MeV/ c are analysed by using the transition density method.
在Glauber多重散射理论的框架下，使用跃迁密度方法分析了入射动量为800MeV/c的π~±介子在~（12）C上的非弹性散射的最新实验材料。 - Effects of Collective Flow on Two Pion Interferometry
相对论重离子碰撞中集合流对2π干涉学分析的影响 - The QCD behaviour for the valence quark distribution function of pion in the leading logarithm approximation and relevant differential cross-section
带头对数近似下的π介子价夸克分布函数的QCD行为和有关的微分截面 - In this paper we calculate the normalization constants mp_ 0 π and mp_ 0K of the twist-3 distribution amplitudes of the pion and kaon from the QCD sum rules, instead of using the equations of motion.
用QCD求和规则计算了π介子和K介子的两个twist3分布振幅的归一化常数mp0π和mp0K。 - For the incident pion energies ranging between 0 and 300 MeV, the s and p wave components are included in the π N amplitude.
本文计算的能区是：入射π介子的动能处于0～300MeV之间，在计算中同时考虑了π-核子散射振幅中s、p波分量的贡献。 - Nuclear Fermi Motion Effect on Pion Double Charge Exchange
核内核子费米运动对π核双电荷交换反应的影响 - The Isobar Model of Pion-absorption Reaction at Intermediates
中能π吸收反应的Isobar模型 - Damping effects of weak processes in pion condensate on neutron star vibration
π凝聚态中的弱过程对中子星振动的阻尼效应 - It is argued that N-N force is determined by both quark exchange effect potential and one pion exchange potential.
核力由夸克交换效应势和单π交换势共同决定。 - Long range correlation single particle spectrum and pion condensation in PROTON-NUCLEUS collision
质子与核碰撞中长程关联单粒子谱和π凝聚 - The model of quark-gluon exchange and the model of one pion exchange to unified describe nuclear force
夸克胶子交换模型和单∏交换模型对核力的统一描述 - In the theoretical research, there are the Pion Exchange Model and Quark Model;
从理论研究来看，主要有：介子交换模型、夸克模型和手征微扰论。 - The corrections of the mass-centre and the quark mass effect for the soliton bag model with pion cloud
在π云孤粒子袋模型中的质心修正和夸克质量效应 - Using the analytic expression for valence quark distribution function of hadron in the leading logarithm approximation given by paper, we discuss the QCD behaviour for the valence quark distribution function of pion. The existing data for valence quark distribution function of pion are explained excellently.
本文利用我们已经给出的在带头对数近似下强子价夸克分布函数的解析表达式，讨论了π介子价夸克分布函数的QCD行为，很好地解释了现有的π介子价夸克分布函数数据。 - We propose a model for the calculation of the inclusive eta production reaction induced by pion.
本文提出了计算π引起的单举η产生的模型理论。 - Inelastic scattering of pion and Kaon mesons on Ca nucleus
π~±和K~±介子在Ca原子核上的非弹性散射 - Influence of gluon distribution on Pion to J/(?) diffractive production
π介子的胶子分布函数对J/Ψ衍射产生的影响 - Absorption Correlation in Pion Interferometry Analyses
π干涉学分析中的吸收关联 - A quark model calculation for the shortrange contribution in the pion double charge exchange reaction
π-核双电荷交换反应短程贡献的夸克模型计算 - Our results indicate the important role of the pion meson cloud on Δ( 1232) resonance.
计算结果表明了介子云对Δ（1232）共振态的性质的重要作用。 - Using the subtracted dispersion relations we have treated the problem of the S-wave pion nucleon scattering.
我们用经过减除的色散关系处理了π-核子S波散射。 - The EMC provides energy and other information for electron and pion identifications.
由于在量能器中的沉积能量不同，可以对电子和π介子进行很好的识别。 - Thus we need perform Hartree-Fock calculation to include the pion.
因此，为了能够描述π介子的交换，我们需要引入Hartree-Fock近似。