無人船、国内輸送に「助け舟」　日本郵船やNTT

無人船、国内輸送に「助け舟」　日本郵船やNTT
https://www.nikkei.com/article/DGXMZO64070620Y0A910C2X11000/

last-modified: 2020-10-09 10:18:59