1. The geographical area of an aquifer in which there is a downward movement of water towards the water-table.
2. The area that acts as a catchment for any particular aquifer.
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。