geoid

/jee-oid/US // ˈdʒi ɔɪd //UK // (ˈdʒiːɔɪd) //

大地水准面,大地水准仪,大地坐标系,地球仪

Definitions

n.名词 noun

1
- : an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents.
- : the geometric figure formed by this surface, an ellipsoid flattened at the poles.

It's geoid teah is this; aw've monny a time ta'en a gooid swig aght o' that teah-pot before to-day.
The west-European and the Russo-Scandinavian meridians indicate another anomaly of the geoid.
The reduction of triangulation base lines from the geoid to the reference ellipsoid.
The geoid is defined as the average level of the sea, which is thought of as extended through the continents.
In physical geodesy, gravimetric data are used for the determination of the geoid and components of deflections of the vertical.