氦丰度
- 网络helium abundance;He abundance
氦丰度-
根据氦丰度的观测值给出了早期宇宙中暗能量和高能光子的约束范围。
The constraint ranges of the dark energy and high energy photon in early universe are given by the observation datas of the helium abundance . 4 .
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氢壳层内部氢和重元素及氦壳层内的中子数和重元素的丰度偏低，而氦元素丰度偏高；
The abundance of H and heavy element in H-burning shell and neutron density and heavy element in He-burning shell are all reduced , but the abundance of the He is increased ;