https://www.youtube.com/watch?v=H8JxrD3TZeA
最大級のトンネルボーリング技術の全工程。 信じられないほどの近代的なトンネル建設機械。
ここで購読してサポートしてください: https://bit.ly/3HpR7tX
楽しみ！
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Credit:
Marti
https://www.youtube.com/@MartiGroup/featured
https://www.marti.com/ch_de/
https://www.instagram.com/martigroup/
https://www.linkedin.com/company/marti-holding-ag/
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