Are you kidding? Is it economically viable

来源: panlm_ 于 2026-02-01 17:40:59 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (105 bytes)

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

请您先登陆，再发跟帖！