One of them is the force of gravitation (地心引力), which tries to pull the satellite towards the earth and is like a rope which keeps the satellite from flying away.
其中一个是地心引力的力量，这股力量试图把卫星拉向地球，就像一根把卫星绑住的绳子，防止卫星飞远了。
Gravitation is the force which holds all the atoms of a star together.
引力是把一个恒星上所有的原子聚集在一起的力量。
Newton's law of gravitation refers to the force between two particles.
牛顿的万有引力定律指的是两个质点之间的力。
Modern physics thinks that there are 4 kinds of force in the universe: electromagnetic force, gravitation, strong force and weak force.
现代物理学认为宇宙中存在4种力：电磁力、万有引力、强力和弱力。
Star has many characters, it is a huge air mass, and also has huge mass, it forms a gaseous sphere with great pressure force and uneven distributed mass under the effect of gravitation.
恒星有着许多特性，它是一个巨大的气团，并且有着同样巨大的质量，在万有引力的作用下形成一个有着巨大压力的、质量分布不均的气体球。
The concept about the center of inductive electric charge and the center of electrostatic force are introduced by analogy with the center of mass and the center of gravitation.
类比质心和引力作用中心，引入感应电荷中心和静电引力作用中心概念。
Through analyzing example, the relation between axial rigidity and pulling force of the cable and the affection to axial rigidity about gravitation rigidity and elastic stiffness have been discussed.
通过算例分析，讨论了索的轴向刚度与拉力变化的关系，分析了重力刚度和弹性刚度对轴向刚度的影响；
Take the pipe as an isolator, under the effect of the external load and the mid-plane gravitation mentioned above, the displacement, the internal force and the internal moment can be worked out.
将管道作为隔离体，在外载荷及前述中面应力的影响下，求位移、内力、内力矩。
In the natural world, people have discovered four kinds of forces: the electromagnetic force, the gravitation, the weak force, and the strong force.
在自然界里，人们已发现了四种力：万有引力，电磁力，强力，弱力。
In the natural world, people have discovered four kinds of forces: the electromagnetic force, the gravitation, the weak force, and the strong force.
在自然界里，人们已发现了四种力：万有引力，电磁力，强力，弱力。
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