强子

In our study, we adopt theQCD effective models, which have the properties of chiral symmetry andother underlying properties possessed by QCD, to study the hadron and nuclearproperties. We engage in our study in two aspects.

鉴于目前QCD在低能区域对强子性质与核性质描述的困难，在本文中，我们采用有着手征对称及其自发破缺等这些基本特性的QCD有效模型来描述强子与核的性质。

These results reflect the less stability of strange hadronic matter with weak hyperon-hyperon interaction.

这些都反映了弱的超子相互作用下奇异强子物质的稳定性要弱于强的超子相互作用下的奇异强子物质。

Since the mechanism and form of gluon confinement have not been known clearly, certain phenomenological models have to be used in many previous works.

实验上的困难主要在于，基态胶球所处的能量区域同时也是强子态非常丰富的区域，而具有相同量子数的胶球与强子态之间可能存在的混合使对胶球的识别更为困难。

The success of quark model and standard model has demonstrated that quarks and gluons field are the only fundamental components in hadrons world.

对强子结构和标准模型研究的一再成功已表明夸克和色场是强子世界的最基本组成部分。

At the hadronic level, nucleons and mesons are constituents of nuclei and hadronic matter.

在强子层次上，原子核或强子物质的基本组元是核子和介子。

The SU (3) chiral symmetry spontaneous breaking should be considered as the strange hadronic matter is studied.

研究奇异强子物质，应该考虑强子层次的SU（3）手征对称性自发破缺。

According to both the development on badrons physics and the aspect of Lanzhou cooling storage ring and based on the analysis and propositions given by experts in China, we propose some hadrons physics program at CSR.

介绍了当前强子物理的研究现状和兰州冷却储存环的能量特点，以及国内强子物理专家的分析和建议。

But there will be more or less flaws when these models are extended to explore the interaction of hadrons. For example, Glashow-Isgur model can not give the intermediate interaction of nuclear force.

上述夸克模型都能很好地描述强子的性质，但是推广到强子相互作用时，都存在一些不足之处，如往往得不到核力的中程吸引。

Even though in QCD we have a theory of the strong interactions, unfortunately, calculating the properties of hadrons from the QCD lagrangian has proven to be a very difficult task in this strongly coupled nonlinear theory.

由于QCD是一个非线性的、非常复杂的理论，而且强子内部的相互作用很强，所以从QCD拉式量出发计算强子的性质是一个非常艰巨的任务。

In the last half century, many theoretical and experimental envidences confirmed the existence of quarks without doubt, however, these experiments showed that quarks only exist inside hadrons and we will never find free quark.

近半个世纪的理论和实验研究无可争辩地证实了核子等强子内存在夸克，不过这些夸克只存在于核子等强子内而不能作为自由夸克存在。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。