三峡大坝的疑问/疑虑一直存在的关键在于当时的设计的“混凝土浇注强度”和实际施工能达到强度之间的巨大差异。。。。

来源: Timshel 于 2019-07-16 15:36:52 [旧帖] [给我悄悄话] 本文已被阅读：次

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