The parallactic refraction between the stars and the satellite is small and well determinate, except for the irregular stellar movements known as erratics.

除了通称为游动不规律动之外，恒和卫之间视折光微小，而且是容易测定。

Said image pair with parallactic information can also be inputted to the computer by scanning equipment or can be formed by adopting computer three-dimensional animation software.

合成片5可以制成透明投影片或幻灯片，用作立像投影。