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    Comparison of the new and old standards of GB/T 6499
    ZHANG Chengsen, SHAO Long, WANG Min, ZHANG Zhiwei, SUN Zhongxiang
    CHINA FIBER INSPECTION . 2025, (9): 89 -91 .  DOI: 10.14162/j.cnki.11-4772/t.2025.09.012