The space-time symmetry, the internalsymmetry and the relation between the symmetries and the groups are discussed.
分别讨论了时空对称性和内部对称性及其与数学中的群的关系。
2
By theoretical analysis, the considerations were put forward about the check with symmetry solving hyperstatic structure, avoiding internal force diagram check errors caused by inertial thinking.
通过理论分析，提出利用对称性求解超静定结构时应注意的问题，避免因惯性思维造成最后内力图校核出现错。
3
The orderliness sense can show the internal logic and disciplinarian in the interior circumstance through symmetry, repetition, cadence, equilibria, etc.