- symmetry directions
- 对称方向
Medical Chinese dictionary (湘雅医学词典). 2013.
symmetry directions
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Symmetry in physics — refers to features of a physical system that exhibit the property of symmetry that is, under certain transformations, aspects of these systems are unchanged , according to a particular observation. A symmetry of a physical system is a physical or … Wikipedia
Symmetry combinations — This article discusses various symmetry combinations.In 2D, mirror image symmetry in combination with n fold rotational symmetry, with the center of rotational symmetry on the line of symmetry, implies mirror image symmetry with respect to lines… … Wikipedia
Symmetry — For other uses, see Symmetry (disambiguation) … Wikipedia
Translational symmetry — In geometry, a translation slides an object by a vector a: Ta(p) = p + a.In physics and mathematics, continuous translational symmetry is the invariance of a system of equations under any translation. Discrete translational symmetry is invariance … Wikipedia
Spontaneous symmetry breaking — Quantum field theory (Feynman diagram) … Wikipedia
Tetrahedral symmetry — A regular tetrahedron has 12 rotational (or orientation preserving) symmetries, and a total of 24 symmetries including transformations that combine a reflection and a rotation.The group of symmetries that includes reflections is isomorphic to S 4 … Wikipedia
Rotational symmetry — Generally speaking, an object with rotational symmetry is an object that looks the same after a certain amount of rotation. An object may have more than one rotational symmetry; for instance, if reflections or turning it over are not counted, the … Wikipedia
Octahedral symmetry — The cube is the most common shape with octahedral symmetry A regular octahedron has 24 rotational (or orientation preserving) symmetries, and a symmetry order of 48 including transformations that combine a reflection and a rotation. A cube has… … Wikipedia
C-symmetry — In physics, C symmetry means the symmetry of physical laws under a charge conjugation transformation. Electromagnetism, gravity and the strong interaction all obey C symmetry, but weak interactions violate C symmetry. Contents 1 Charge reversal… … Wikipedia
Directional symmetry — is roughly defined as things going the same direction, and is to be distinguished from directional asymmetry, meaning things going different directions. The following formula tests for directional symmetry: If is the actual signal and is the… … Wikipedia
radial symmetry — noun A form of symmetry, arranged equally in all directions from a central point, thus any plane through the central point will divided into mirror image pieces. A circle has radial symmetry, a square does not. See Also: symmetry, bilateral… … Wiktionary
