A uniform resource locator which references a Web page that is not referenced by any other Web page. Such a URL is sometimes given to a restricted set of users so that they can access the page in a semi-private fashion.
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。