From the macroscopic properties of gravity you can work out what the graviton should be like 从引力的宏观属性，你可以推算出引力子的大致情况。
They say the observations cannot be explained by theories of gravity that remove the need for dark matter 他们说这种现象不能用暗物质无引力的重力理论来解释。
The result reveals the secrets of how the universal gravitation is produced and the equivalent principles is proved 在严密的推导过程中，揭开了引力的成因，证明了等效原理。
That is why it is the most popular power source for satellites or spacecraft working in the inner solar system 太空船也是这样不断在引力的作用下向下跌，因而出现了无重状态。
If you would hit the mark , you must aima little above it ; every arrow that flies feels the atraction of earth 若想射中靶子，就得瞄得高一些；每射出去的箭都会受到地球引力的影响。
Sometimes i think the discovery of gravitation perhaps should be credited to those apples falling on newton ' s head 有时候我想地球引力的发现也许应该归功于那几只落在牛顿头上的苹果
Studies of the graity field of the earth indicate that its crust and mantle yield when 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地壳和地幔会发生位移。
Studies of the gravity field of the earth indicate that its crust and mantle yield when 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地壳和地幔会发生位移。
These are the factors that govern the various forms of drag resistance and are independent of orientation to gravitational pull 独立于方位和地球引力的因素支配着这些不同形式的拖曳阻力。
Studies of the gravity field of the earth indicate that its crust 外壳 and mantle 覆盖 物 yield when unusual weight is placed on them 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。
