| 1. | The earth is round because of gravity .
地球是由于重力而成为球形的。 |
| 2. | The stone rolled down the mountain by gravity .
这块石头由于重力作用而滚下山。 |
| 3. | The gravity is measured by nulling the beam .
重力值是通过使横臂恢复零位而测定的。 |
| 4. | With variations of gravity the weight rises or falls .
荷重随着重力的变化而升起或降落。 |
| 5. | Obviously the force of gravity mg is acting vertically downward .
显然重力的Mg作用垂直向下。 |
| 6. | Our business, then, is to overcome this action of gravitation .
所以我们必须战胜重力的作用。 |
| 7. | The particle motion is dominated by inertia and gravity effects .
粒子的运动是由惯性和重力作用决定的。 |
| 8. | In order to do their dance properly, bees must have a sense of gravity .
为了使它们的飞舞适当，蜜蜂一定有一个重力的感觉器。 |
| 9. | However, even solid foods will pass down the tube with the aid of gravity .
但是，在重力作用下，即使是固体食物也可通过导管。 |
| 10. | Figure 9-1 is a simplified representation of a horizontal simple gravity settling chamber .
图9-1是简易卧式重力沉降室的简图。 |
