A widely used chemical drawing and modelling program produced by CambridgeSoft.
http://www.perkinelmer.com/category/chemdraw The PerkinElmer website, giving details about ChemDraw and associated software
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。