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Continue to Chatレアアース「国産」目指して 日本海底6000M、無人潜水機の開発着手 https://blog.40ch.net/2018/06/27/rare-earth-domestic-production-aiming-japan-underwater-submarine-6000m-development-of-unmanned-submersible/
レアアース「国産」目指して 日本海底6000M、無人潜水機の開発着手 https://blog.40ch.net/2018/06/27/rare-earth-domestic-production-aiming-japan-underwater-submarine-6000m-development-of-unmanned-submersible/