A chapter of the Maastricht Treaty of 1993, dealing largely with social questions, including employment protection and works councils. The UK government chose originally to opt out of this section of the treaty, but has since accepted it.
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。