Are you kidding? Is it economically viable

來源: panlm_ 於 2026-02-01 17:40:59 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (105 bytes)

Are you kidding? Is it economically viable  for mining 6 km below to ocean base? 

請您先登陸，再發跟帖！