Surface irregularities that impede the passage of air, causing uneven flow. The surface over which the flow takes place may be solid, liquid (e.g. large ocean waves), or of air of different density.
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。