The study of the internal linkages of a system at a given time, as in cross-sections in historical geography (Conedera et al. (2007) J. Hist. Geog. 33, 4).
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。