在分子轨道理论中，我们基于轨道的对称性给它们命名。
In molecular orbital theory, we named orbits based on their symmetry.
在分子轨道理论中，我们基于轨道的对称性给它们命名。
So in molecular orbital theory, what we did was we named orbitals based on their symmetry.
描述一个键的办法,是描述形成键的轨道，以及键的对称性。
So the way that you describe a bond is you describe the orbitals that the bond comes from, and also the symmetry of the bond.
告诉我们关于，And，the，sigma，tells，us，something，about，the,分子轨道对称性的信息，特别是它关于键轴是圆柱对称的。
Sigma symmetry of this molecular orbital, specifically that it's cylindrically symmetric about the bond axis.
本文对分子轨道理论教学中关于对称性匹配原则，最大重叠原则， 分子轨道符号及反键效应等几个问题进行了讨论。
The present author discusses the symmetricalmatching principle, the maximum overlapping principle, the molecule orbitalsymbols and the anti-bond effect in the teaching of the molecule orbital theory.
提出了一种轨道对称性匹配的判断方法。
A judging method on matching of orbitals symmetry is put forward in this paper.
对称性较高的团簇容易形成近简并的最外层分子轨道。
Degenerate outermost molecular orbitals is more easily formed when cluster has higher symmetry.
提出了利用定域分子轨道重心确定分子轨道的对称性。
The centroids of localized orbitals (LMO_s) are used to determine the symmetry of LMO_s.
结果表明：对于异自旋三自由基体系，形成异自旋后对称性降低使部分占据的近简并轨道能级劈裂值增大，反铁磁耦合作用普遍增强。
The result shows that part-occupied near-degenerate orbitals split value and dia ferromagnetic coupling increases when symmetry of hetero tri-radicals decreases.
结果表明：对于异自旋三自由基体系，形成异自旋后对称性降低使部分占据的近简并轨道能级劈裂值增大，反铁磁耦合作用普遍增强。
The result shows that part-occupied near-degenerate orbitals split value and dia ferromagnetic coupling increases when symmetry of hetero tri-radicals decreases.
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