1. The "hat" distinguishes symmetry operations from symmetry elements.
“帽号”用来将对称操作与对称元素区别开。
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2. The geometric structure of carbon nanotubes (CNTs) is introduced, the symmetry of zigzag and armchair CNTs is analyzed and these symmetryelements are abstracted and summarized.
3. Note that even though these two design elements (and a few more throughout the site) add visual interest, they still balance each other out to maintain symmetry in the design.
需要学习的是，虽然个别的几个设计元素增强了视觉效果，但在设计上它们依然保持对称以达到平衡。
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4. We also see content elements located at the top and bottom of the layout shifted (translated) horizontally across the page for further symmetry.
页面顶部和底部的元素布局呈水平变换，达到了更深层次的对称的效果。
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5. Translational symmetry can be used to create patterns, such as in the case of tiled website backgrounds and repeating design elements.
平称对称可用来制作各种图案，例如平铺的网站背景和重复的设计元素。
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6. Asymmetry can also represent an object that breaks a predefined pattern of symmetry, or an imbalance of design elements.
不对称打破了预先的对称模式，是设计中不协调的元素。
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7. The present paper discussed some possible translational types in detail, and derived the elements of the pseudo-symmetry for the low symmetry crystal systems (74 space groups).
本文着重分析了可能出现的平移赝对称形式，并以低级晶系所属的74个空间群为例导出了赝对称形式。
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8. A special matrix structure was adopted, that is, each row and each column has one matrix element, and the matrix elements are on the main diagonal symmetry.
我们取特殊的矩阵结构，矩阵每行，每列都有一个矩阵元，并且矩阵元位置是关于主对角线对称的。
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9. Asymmetry is the lack of symmetry. Asymmetry can also represent an object that breaks a predefined pattern of symmetry, or an imbalance of design elements.
不对称即是对称的缺失。不对称打破了预先的对称模式，是设计中不协调的元素。
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10. This course concentrates on the chemistry of non-transition elements and their compounds, with emphasis on symmetry, bonding, periodic properties and the descriptive chemistry of selected groups.
本课程集中研究化学中的非过渡元素及其化合物，并强调其对称，结合，周期性及性质的描述。
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11. Finally, the existence of symmetry biorthogonal elements in some classical normed Spaces is proved.
最后，证明了在一些经典赋范空间中对称性的双正交元存在。
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12. The matrix elements can be grouped into shells by means of the molecular symmetry.
利用分子对称性对矩阵进行分类。
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13. In this article we simplify turbine supercharger impeller as a model, which was jointed of axial symmetry entity elements and plane shell elements, for finite elements analysis (FEA).
利用循环对称条件，将增压器叶轮简化为由实体单元与平面壳体单元组合而成的有限元分析模型。
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14. In this article we simplify turbine supercharger impeller as a model, which was jointed of axial symmetry entity elements and plane shell elements, for finite elements analysis (FEA).
