Water that refreezes at the base of the snowpack. See King et al. (2002) Annals Glaciol. 34, 1, 335 on the detection of superimposed ice in northern Norway.
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。