We discover that it is hard for us to distinguish different neutron star models by the simple constraints of masses, redshifts and rotations on mass-radius relations.

结果发现，质量、红移及旋转频率对相应状态方程质量-半径关系的简单限制很难区分不同的中子星模型。

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In order to distinguish different compact objects, people easily bethink of the difference of mass-radius relations between them that may be caused by different equations of state (EOS).

为了将不同的致密星区分开来，人们最容易想到的是物质状态方程的不同可能导致这些致密天体质量-半径关系的差异。

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