| 1. | Angular perturbations tend to increase instead of decrease .
角扰动倾向于增加而不是减少。 |
| 2. | He was making no attempt now to conceal his perturbation .
他已经不再企图掩饰自己的惶恐不安了。 |
| 3. | The drag perturbations have a minor effect on stability criteria .
阻力的变化对稳定性的影响较小。 |
| 4. | Planetary perturbations make the earth's orbit about the sun irregular .
行星的摄动使得地球绕太阳的轨道是不规则的。 |
| 5. | Under the action of universal gravitational forces the small perturbations will grow .
在万有引力的作用下，小扰动会加强。 |
| 6. | The equations defining the zero-order perturbation simply govern the static solution .
定义零级微扰的方程简单地决定了静态解。 |
| 7. | Perturbations of the force field will cause changes, or variations, of the displacement field .
力场的扰动要引起位移场的变化或者说变分。 |
| 8. | In order to keep variations negligibly small, only small perturbations will be considered .
为了使变分小到可以忽略的程度，仅考虑微小的扰动。 |
| 9. | We must seek two main approximation methods of solution, the variation method and perturbation theory .
我们必须寻求两个主要的近似解法、变分法和微扰法。 |
| 10. | His real perturbation of mind would be best covered and pass concealed under a disguise of pretended lunacy .
在假装疯狂的掩护下，他心神的真正不安倒可以巧妙地遮盖起来。 |
