As the Moon grew cooler and less elastic, rebound from large impactors would have been only partial and incomplete.
随着月球变得越来越冷，越来越没有弹性，来自大型冲击体的回弹变得不完整。
2
The vertical crustal movement after the quake is just on the contrary. This shows the characteristics of elasticrebound and the hypocenter is just near the quadrantal intersection.
震后的地壳垂直运动恰好相反，明显地反映了弹性回跳特征，震源也刚好位于四象限交叉点附近。
3
Based on the elasticrebound theory, an analysis method is proposed in this paper, And the data of relevellings from 1969 to 1975 around the Tangshan area are processed as an example.