光线在通过强引力场附近时会发生弯曲，这是广义相对论的重要预言之一。
综合考虑了光源漂移、光线弯曲、随机抖动等因素的影响。
The influences of the light beam drift, the light beam incurve, the light beam radom tremble and etc.
暗物质构成了大部分的总质量，并主宰了集群的引力透镜，或从光线弯曲的背景星系因引力。
The dark matter makes up most of the total mass, and dominates the gravitational lensing of the cluster, or the bending of light from background galaxies due to gravity.
根据测量光线的弯曲偏移量和偏移方向，合理安排测量工位，避免了光线弯曲对测量结果带来的影响。
Reasonable positions are chosen according to the amount and direction of curly light rays so that influence of the ray curvature is avoid.
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