A US act of 1930 establishing a protectionist tariff regime. It is widely believed that this act and similar measures in other major trading countries including Germany and the UK helped to produce the Great Depression of the 1930s.
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。