Preparation and application of visual acuity checklist, shades of gray card and grey card for nondestructive testing

CHEN Changhua, CHEN Haishan, SHI Feiyang, WANG Pengfei, HU Jiahao, LIU Xiaolei

Physics Examination and Testing ›› 2023, Vol. 41 ›› Issue (5) : 21-25.

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Physics Examination and Testing ›› 2023, Vol. 41 ›› Issue (5) : 21-25. DOI: 10.13228/j.boyuan.issn1001-0777.20230022

Preparation and application of visual acuity checklist, shades of gray card and grey card for nondestructive testing

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{{article.zuoZheEn_L}}. {{article.title_en}}[J]. {{journal.qiKanMingCheng_EN}}, 2023, 41(5): 21-25 https://doi.org/10.13228/j.boyuan.issn1001-0777.20230022

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