38th President of the USA (1974–77). He became President on the resignation of Richard Nixon in the wake of the Watergate affair. The free pardon he granted Nixon two months later aroused controversy.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。