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GB/T 41116-2021 焊缝无损检测衍射时差技术（TOFD）验收等级 Non-destructive testing of welds-Time-of-flight diffr...2023-08-11

GB/T 41115-2021焊缝无损检测超声检测衍射时差技术（TOFD）的应用Non-destructive testing of welds—Ultrasonic test...2022-10-26