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1 двойная симметрия
1) Mathematics: binary symmetry, double symmetry, twofold symmetry2) Metallurgy: diad symmetry -
2 ось симметрии
1) Geology: diad2) Engineering: axis of symmetry, reference axis3) Construction: centre of symmetry, symmetry axis4) Mathematics: figure axis, line of symmetry5) Railway term: axial of symmetry6) Astronautics: centerline7) Makarov: symmetry axis of rotation
См. также в других словарях:
Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… … Wikipedia
Disphenoid — The tetragonal and digonal disphenoids can be positioned inside a cuboid bisecting two opposite faces. All four faces are isosceles triangles. Both have four equal edges going around the sides. The digonal has two sets of isosceles triangle faces … Wikipedia
Diethyl azodicarboxylate — Diethyl azodicarboxylate … Wikipedia
dihexagonal-dipyramidal — adjective : of or characterized by the symmetry of the class of crystals in the hexagonal system having a vertical hexad axis, six horizontal diad axes, six vertical planes, and a horizontal plane of symmetry … Useful english dictionary
diploidal — dəˈplȯidəl, (ˈ)di|p adjective Etymology: diploid (I) + al : belonging to or characterized by the symmetry of the class of isometric crystals having diad axes parallel to the crystallographic axes, triad axes in the directions of the cube body… … Useful english dictionary
digonal — (ˈ)dī|gōnəl adjective Etymology: di + Greek gōnia angle + English al of an axis of symmetry of a crystal : twofold, diad … Useful english dictionary
