PDF(458 KB)
A Study on Traffic Network Density, R&D Innovation Investment and Industrial Structure Upgrading
WU Yongli, WU Yuhao, ZHANG Jiaojiao
Journal of Railway Engineering Society ›› 2025, Vol. 42 ›› Issue (3) : 96-101.
PDF(458 KB)
PDF(458 KB)
A Study on Traffic Network Density, R&D Innovation Investment and Industrial Structure Upgrading
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