An image that has been created using a hardware device known as a scanner. Scanned images are sometimes used on the World Wide Web. However, they often need to be improved and retouched by a graphics program before they are published.
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。