(physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system
双语例句
All cabinets are mirror-imaged matched pairs using the finest veneers finished to a very high standard.In addition the veneers are book-matched for symmetry on each side. 所有的箱体外饰都是用上好的木皮精心加工而成，并且每一对箱体的木皮纹理都是镜像对称的。
The observed deltas are highly two-dimensional in planform, adopting palmated structures which retain throughout their evolution a high degree of mirror symmetry. 实验观察到的三角洲，为一高度二维蹼状发展且镜面对称的构造。
