as elliptical, or approximately parabolical, and the orbital plane as passing a little north of the vertical, through the centre of
Kaynak: Giovanni Battista Guglielmini

Also mounted on the Orbital Compartment was a 2 m parabolical high-gain antenna, used for long-range communications. Depending on the
Kaynak: 3MV (spacecraft)

in cartesian coordinates , spherical , cylindrical , or even elliptical or parabolical coordinates:( m curl,mathbf F),_3frac 1 a_1a
Kaynak: Curl (mathematics)