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JR東日本,新幹線のトンネル検査で日本初となる新技術を導入
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https://railf.jp/news/2025/04/16/001000.html
JR東日本,新幹線のトンネル検査で日本初となる新技術を導入
You're leaving TrendXday.com. Please be careful when visiting external sites.