Updated:2023-12-22
    • Analysis on the technical competition situation of grain harvester based on patent measurement

    • ZHENG Qian , ZHANG Zongyi , LI Hongbo
    • Journal of China Agricultural University Vol. 28, Issue 12, (2023)
    • DOI: 10.11841/j.issn.1007-4333.2023.12.22     

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