最初的深海探險，就是用的長攬密封鋼筒，聯結的長攬也可當作有線通訊用。如今，海中通訊主要是聲波傳輸，但是否還有另法？

來源: 大江川於 2012-07-12 11:13:55 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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