| 1. | The characteristic equations of the two equations are identical .
两方程对应的特征方程是恒等的。 |
| 2. | These are equations of local conservation of mass and the jump condition .
这些就是局部质量守恒方程和跃变条件。 |
| 3. | If we drop one variable, we must also drop one equation of motion .
如果我们去掉一个变量，则必须同时去掉一个运动方程。 |
| 4. | Even in this case the equations of motion cannot be integrated exactly .
即使是在这种情况下，运动方程也是不能精确积分的。 |
| 5. | The internal energy is related to other variables through the equations of state .
借助状态方程，内能和其它变量发生关系。 |
| 6. | No frequency other than the driving frequency will satisfy the equation of motion .
除策动频率外，没有一个频率能够满足运动方程。 |
| 7. | The equations of electromagnetism weathered the revolution of relativity unchanged .
经受过相对论变革之后的电磁学方程并没有变化。 |
| 8. | This equation is the local equation of mass conservation of a species in solution .
这个方程就是溶液中一种组分的局部质量守恒方程。 |
| 9. | The equations of equilibrium and kinematic relations are independent of the type of material .
平衡方程和运动学关系式是与材料类无关的。 |
| 10. | Using the equation of parabola, we obtain for the sheer stresses at any point in the plate .
应用抛物线方程，即可得到板内任意点的剪应力。 |
