elements of symmetry的意思|示意

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。

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。

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。

The geometric structure of carbon nanotubes (CNTs) is introduced, the symmetry of zigzag and armchair CNTs is analyzed and these symmetry elements are abstracted and summarized.

在讨论了碳纳米管的几何结构的基础上，对齿型和椅型碳纳米管的对称性进行了分析并将这些对称元进行了抽象和总结。

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。

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。