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GB/T 41116-2021 焊縫無(wú)損檢測衍射時(shí)差技術(shù)（TOFD）驗收等級 Non-destructive testing of welds-Time-of-flight diffr...2023-08-11

GB/T 41115-2021焊縫無(wú)損檢測超聲檢測衍射時(shí)差技術(shù)（TOFD）的應用Non-destructive testing of welds—Ultrasonic test...2022-10-26

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