1 An area served by more than one urban centre, i.e. within two or more different urban fields.
2 A transition zone between two floral/faunal communities. See, for example, Wolf and Flamenco-S (2003) J. Biogeog. 30, 11.
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。