洞庭湖周邊類似的蓄洪區有幾百個，加固的沒決口說明起作用了。蓄洪區在洞庭湖邊緣處建堤形成，可防一般性洪水

來源: 21-C 於 2024-07-09 09:23:22 [舊帖] [給我悄悄話] 本文已被閱讀：次

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