官方授权英文版 ISO 23279 2nd Edition, March 1, 2010
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ISO 23279 2nd Edition, March 1, 2010 Non-destructive testing of welds — Ultrasonic testing — Characterization of indicat…
ISO 23279 2nd Edition, March 1, 2010
Non-destructive testing of welds — Ultrasonic testing — Characterization of indications in welds