对地球引力的研究表明，在不寻常的负荷之下地壳和地幔会发生位移。
Studies of thegravity field of the Earth indicate that its crust and mantle yieldwhen unusual weight is placed on them。
对地球引力的研究表明，在不寻常的负荷之下和会发生位移。
Studies of the gravity field of the Earth indicate that its and yield when unusual weight is placed on them.
当牵引角度不变时，随牵引力的增大，颈椎的位移及各点的应力均增大，椎间隙的形变亦更明显。
When the traction Angle was constant, the displacement and stress of the cervical column as well as the deformation of intervertebral space were all increased with the enhancing of traction force.
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