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www.ChineseStandard.net Database: 189759 (26 Oct 2025)

YBJ31-1986

Chinese Standard: 'YBJ31-1986'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
YBJ 31-1986EnglishRFQ ASK Days<=3 (Water hydrogeological investigation norms) YBJ 31-1986 Obsolete YBJ 31-1986

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  GB 55018-2021  GB/T 17742-2020  YB/T 6139.2-2023
 
   

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