digonal中文什么意思

• 二次对称轴
• 二方的

• digonal axis:    二次轴; 二角轴，双角线轴
• digonal bar:    斜列砂坝
• digonal alternating class:    二方映转晶组
• digonal equatorial class:    二方赤平晶组
• digonal holoaxial class:    二方全轴晶组

其他语言

digonal meaning： /digˈə-nl/ (mathematics, etc)   adjective   (of symmetry about an axis) such that a half-turn (180º) gives the same figure    ORIGIN: Gr di- twice, and gōniā angle