Web-based adverts which look like windows with visible entities such as buttons and menus; they are designed to tempt the user to click on the advert and hence visit the advertiser’s Web site.
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。