DB37/T 4385-2021 Underwater inspection regulations during the operation period of the east route of the South-to-North Water Diversion Project across the Yellow River (English Version)
Shandong Provincial Standard of the People's Republic of China
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DB37/T 4385-2021
DB37/T 4385-2021 history
2021DB37/T 4385-2021 Underwater inspection regulations during the operation period of the east route of the South-to-North Water Diversion Project across the Yellow River