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地球上会不会缺少某种我们不知道的重要***，导致咱们无意识中科技树落后了?


更新时间：2025-06-20 10:55:13      点击次数： 次

铍不就是。

这玩意在宇宙中都很稀有，因为核聚变产生的铍-8不稳定，而唯一稳定的铍-9无法通过核聚变产生。

唯一途径是高能宇宙射线把碳-13等重原子核打碎成更小的原子核，但这个过程同样能打碎铍原子核。

结果是铍的分布十分稀薄，根本攒不起来。

更恶心的是由于铍在地球上很少见，人类没有进化出耐受性，结果是铍和其化合物对人体有剧毒。

本来铍是一种比铝更轻，更结实的材料，在航空航天领域应该大有作为。

然而铍的碎屑比石棉还毒…。

地球上会不会缺少某种我们不知道的重要***，导致咱们无意识中科技树落后了?

为什么现在房贷利率这么低3.1%了，还有人提前还贷？

内蒙古通报那尔那茜定向委培争议，称其涉嫌高考报名材料造***，将严肃追责问责，涉事人员面临哪些责任处罚？

 

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