A special kind of twinned crystal in which the twin-plane has markedly changed the shape of the crystal, rather like a knee or elbow joint. The twin-plane is a reflection plane.
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。