When such a GIF image is transferred to the browser, the image is built up gradually and the user is given the impression of a graphic being built up from a rather foggy image to the point where the final image is displayed.
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。