n.天體測定

Astrometry has other advantages as well. 天體測量也有其他優(yōu)勢。

Visual position measurements in astrometry are most affected. 天體測量學(xué)中視位置的測量受影響最大。

It is specialized in astrometry and survey operations. 它是空間測量學(xué)專業(yè)船只。

The ESA astrometry satellite HIPPARCOS will be launched in the first part of 1988 or later. 歐洲空間局專門用作空間天體測量的伊巴谷衛(wèi)星將于1988年上半年發(fā)射。

A new theoretical system of astrometry in the frame of relativity ought to be finished. 天體測量學(xué)需要在相對論框架下重新建立自己的理論體系。