So, if the R0 is below 1, the infection peters out; if it's one, it stays steady.
R0<1,传播将逐渐减弱;R0=1,传播规模将维持稳定。
However, at that point nuclear fusion no longer releases enough energy, and the pressure from the core peters out.
并支持它们快速 终变为铁或镍,然而 当核聚变不再释放能量时。
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