- axisymmetrical mirror
- осесимметричное зеркало
English-russian dictionary of physics. 2013.
English-russian dictionary of physics. 2013.
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