结果显示，非重子暗物质背景的存在将对引力系统的不稳定性产生重要影响。

The results show that the existence of non-baryonic dark matter background influences seriousely the instability of a gravitational system.

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暗物质：这一般是指“外来的”非重子物质，与普通物质只有较弱的的相互作用。

Dark matter: this generally refers to "exotic" non-baryonic matter that interacts only weakly with ordinary matter.

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