| 1. | Mass flow occurs as a result of external forces .
质体流动的发生是由于外力的结果。 |
| 2. | At equilibrium the resultant of all external forces vanish .
在平衡时，所有外力的合力为零。 |
| 3. | Acceleration always has the direction of the net force, regardless of the direction of the velocity .
加速度的方向总是与净外力的方向一样，而与速度的方向无关。 |
| 4. | Protect lcd against damage from outside force
保护好lcd屏避免外力的挤压。 |
| 5. | A body at rest will not move till a force is exerted on it
若无外力的作用，静止的物体不会移动。 |
| 6. | A body at rest will not move until a force is exerted on it
若无外力的作用，静止的物体不会移动。 |
| 7. | It also affects how much effect an external force ( for example , gravity ) has on the object
在一个物体上多少也受一个外力的影响(如重力) 。 |
| 8. | Free from external forces , the gyroscope s axis should continue pointing at the star - forever
在没有外力的影响下，回转仪理论上应会永远不变地指向同一星体。 |
| 9. | It follows that a body in motion will go on and on in motion , unless acted upon by an outside force
可以推断，除非受到外力的作用，运动中的物体将会一直运动下去。 |
| 10. | North , among others , attributed endogenous factors as the reason of the rise of western world
与之相反，在中国由于缺少外力的冲击，没有出现利于经济增长的制度变迁。 |
