The result is consistent with the usual assumption that the chiral symmetry is gradually restored as density of a nuclear matter increases.
这个结果和手征对称性随着核物质密度增加而逐渐恢复这一通常假设是符合的。
The reaction rate of neutrons with matter depends on the density of neutrons, their velocity, the nuclear density and the particular interaction cross section.
中子和物质的反应速度与中子的密度、中子的速度、原子核密度以及特有的反应截面有关。
By means of the thermo field dynamics, the change of nucleon effective mass in nuclear matter with density is discussed.
用热场动力学方法计算了核物质中核子有效质量随密度的变化关系。
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