地球收缩 meaning in English

contract of earth
earth contraction

The changes do not indicate that earth is shrinking but rather that previous estimates ? measured from earth ' s core to its surface ? were slightly off , the researchers explained
该变化并未显示地球收缩了，原先的估计是从地心测量到地表，现在只是有微小的不同，研究者解释说。
The geomechanics based on the change of rotating speed of the earth could answer a large part of the above mentioned questions , but the power which it depends on offered by the expansion or contract of the earth and tides et al is too weak to serve as the energy to change the rotating speed of the earth , so it is also difficult to explain them quantitatively
基于地球自转速度变化的地质力学理论，对之所做的定性解释颇为合理，但因其只靠地球收缩及潮汐引力等缓变力作为引起地球自转速度变化的动力来源，力量强度太小，不足以引发强大的褶皱造山运动，且有被海水运动取代的难题。