A line on a folded layer which is common to and links the highest points on that layer. The term is employed most usefully in respect of plunging folds where the axial trace and crest line occupy different positions.
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。