介子

The results of DDME1 and TW99 have little odds, they both give the stronger meson field potential, the smaller hyperon transition density, the harder equation of state and the bigger maximum mass; opposite to DDME1 and TW99, the GL97, TM1 and GL85 give the weaker meson field potential, the bigger hyperon transition density, the softer equation of state and the smaller maximum mass.

其中DDME1和TW99计算的结果基本相同，它们给出较强的介子场势、较小的超子转变密度、较硬的物态方程和较大的质量极限；而GL97、 TM1和GL85

There should be mesons consisting of strange quarks in the strange hadronic matter besides hyperons with a nonzero strangeness.

奇异强子物质中不仅包含奇异数S≠0的超子，还应该包含由奇异夸克组成的介子。

The various effective interactions'(including DDME1,TW99,NL2,TM1,TM2,GL85 and GL97) influence on the constitute, equation of state and mass of neutron star are studied in the framework of relativistic mean field theory considering the interacting nucleons, hyperons and mesons system at finite temperature (T=20 MeV).

从相对论平均场（Relativistic Mean Field，RMF）理论出发，考虑核子、超子和介子的相互作用，研究了一定温度（T=20 MeV）下，各种不同相互作用参数组（DDME1、TW99、NL2、TM1、TM2、GL85和GL97）对中子星物质的粒子组成、状态方程和质量等的影响。

In the theoretical framework of the relativistic mean field, the influences of π- meson condensate on the equation of state and the particle fractions of neutron star matter including delta isobars are studied.

在相对论平均场理论框架下研究了π-介子凝聚对包括Δ共振态的中子星物质状态方程及其粒子分布的影响。

Finally,we study meson mixing in asymmetric nuclear matter with spontaneous breaking of isospin symmetry in the framework of two flavor NJL model.

最后，我们在两味NJL模型的框架下研究了非对称核物质体系在同位旋对称性自发破缺时的介子混合现象。

Traditionally, research on the phenomenological theory for neutral kaon system use the effective Htmiltonian theory based on the Wigner-Wesskopf approximation.

1引言 中性K介子系统一直以来是由一个准到弱作用二阶的2X2非厄密有效哈密顿量描述的。

Comparing with one-dimensional non-uniform longitudinal flow model, the rapidity distribution of lighter strange particle kaon also shows a dip due to the effect of transverse flow.

这里应特别强调的是：本文所说的火球是指由相对论重离子碰撞所产生的热系统，k介子，质子和Λ它们的e不同，反映了它们在纵向分布的非均匀程度不同。

Unlike the usual components of strange matter, the cascades〓 are also taken into account besides lambdas.

模型也将包括〓和〓介子，用来描述超子之间的较强的相互作用。

A possible quantum mechanical picture of multiple production of mesons is discussed in the present paper.

本文讨论在宇宙射线中介子簇射产生的一种可能的过程。

In our work, the K and 〓 mesons are regarded as two q〓 clusters.

在此项研究中，将K〓介子视为两个q〓集团。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。