The locus of adjacent points with the same phase in the path of an advancing wave, e.g. a ripple spreading on the surface of a pond after a stone has been thrown into it.
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。