Up to now, almost all researches of the driving force source of the plate movement concentrate the strarting point at the earth interior.

到目前为止，几乎全部有关板块运动驱动力源的研究，都把着眼点集中在地球内部。

youdao

Here, we show that it is possible to realize a backward scattering force which pulls a particle all the way towards the source without an equilibrium point.

但他们发现利用向后的散射力牵引粒子向后运动在理论上是可行的。

youdao