旋转对称轴
- 网络Rotational axis of symmetry;rotation axis of symmtry;rotation about an axis;rotary symmetrical axis
旋转对称轴-
正12面体框架构型（RDFC）&立方格子与五次旋转对称轴共存的几何构型
Framework configuration of a positive dodecahedron ( rdfc ) - the geometric configuration of coexisting cubic lattice and penta - rotating symmetrical axis
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分别用双转轴证明法、单转轴证明法、保持一点不动证明法三种方法证明晶格不具备五度及六度以上旋转对称轴的特性。
The article uses three different ways to proof that there is nonexistence of5-fold and upwards of6-fold symmetry axes in the crystal lattice .
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由于积分困难，常用近似积分求得刚度矩阵，这种近似积分对于靠近旋转对称轴的元素，误差很大，所以，长期以来，被认为不满意的办法。
It is difficult to obtain the rigidity matrix by exact integration , and as approximations close to the symmetrical axis , the accuracy of this approximation deteriorates very rapidly .