| 1. | Newton's law of universal gravitation is valid .
牛顿万有引力定律是正确的。 |
| 2. | We owe to newton the principle of gravitation .
我们全靠牛顿才知道引力的原理。 |
| 3. | Our business, then, is to overcome this action of gravitation .
所以我们必须战胜重力的作用。 |
| 4. | Newton's law of universal gravitation has been extremely useful .
牛顿的万有引力定律是极其有用的。 |
| 5. | To understand galaxy formation we would like to think of gravitation .
为了理解星系的形成，我们总要想到万有引力。 |
| 6. | 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。 |
| 7. | The law of gravitation explains many phenomena not previously, understood .
引力定律解释了许多以前所不能理解的现象。 |
| 8. | Newton's theory of gravitation is an approximation of a more general theory .
牛顿的引力理论只是一种更普遍理论的近似形式。 |
| 9. | The potential equation had figured in the eighteenth-century work on gravitation .
位势方程在十八世纪关于引力的研究中已显露头角。 |
