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机译:
Korea Gas Safety Corp, Inst Gas Safety R&D, Eumseong Gun, South Korea;
Samsung Fire & Marine Insurance, Global Loss Control Ctr, Seoul, South Korea;
Konkuk Univ, Dept Civil Engn, Seoul, South KoreaKorea Univ, Sch Civil Environm & Architectural Engn, Seoul, South Korea;
Fatigue prediction; variable stress spectra; stress interaction; entropy index; crack severity index; steel bridges;