老钱也没全错：土豆现在就是亩产万斤：）这里比的是估算能力，费米用一个纸片就估算出原子弹当量：）

来源: JSL2023 于 2024-06-24 12:10:20 [旧帖] [给我悄悄话] 本文已被阅读：次

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