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sigh007
发表于 2012-3-19 19:41:33
MIL-HDBK-728/6
MIL-HDBK-728/6, MILITARY HANDBOOK: ULTRASONIC TESTING (16 DEC 1986)., Ultrasonic testing employs high-frequency mechanical waves to detect various material variables.
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MIL-HDBK-728/6