Toroidal coordinates
description: three-dimensional orthogonal coordinate system
subject: Category:Three-dimensional coordinate systems
subject: Category:Orthogonal coordinate systems
label: 圓環坐標系 @zh
description: sistema de coordenadas tridimensional ortogonal @es
label: Coordenadas toroidais @pt
description: système de coordonnées orthogonales tridimensionnelles @fr
label: Тороидальная система координат @ru