71 | 3-D Printed Buildings Are a Tech Twist on Ancient Construction Techniques (簡訳:古くから建設された3Dテクニカルツイスト) | --- | |
WSJ.com: WSJD | 2018-04-01 23:40 | ????0? | |
Using 3-D printers to build concrete jail cells, foam homeless shelters and earthquake-proof bungalows is a promising, if still unproven, construction technology. -- ???????? | |||
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