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说明: 年度报告中谈到了六个问题:1.现有结构;2.辅助和防护系统;3.生命线系统;4.防灾研究和计划;5.国际合作研究;6.教育和技术转让。现将前三个问题的内容翻译如下,供大家了解美国国家地震工程研究中心最近的工作。
Note: Six issues are addressed in the annual report: 1. Existing structure; 2. Auxiliary and protection systems; 3. Lifeline system; 4. Disaster prevention research and plans; 5. International cooperation; 6. Education and technology transfer. The contents of the first three issues are now translated as follows for your understanding of the recent work of the National Earthquake Engineering Research Center.