| 1. | The order of partial differentiation is immaterial .
偏微商的次序并不重要。 |
| 2. | The evaluation of partial derivation is quite simple .
偏微商求值十分简单。 |
| 3. | We will replace the partial derivative by an ordinary derivative .
我们可用普通微商代替偏微商。 |
| 4. | In other coordinates it will involve second and possibly first derivatives with respect to time .
在别的坐标系中，它除了包含对时间的二阶微商外，还可能会包含对时间的一阶微商。 |
| 5. | He can obtain the force components by differentiating the potential and can often use the potential energy in an energy equation .
通过对势能求微商他可以得到力的分量，而且在能量方程中经常可以用势能。 |
| 6. | The oblique derivative problem for nonlinear ellipticequations of second order
二阶非线性椭圆型方程的斜微商问题 |
| 7. | An oblique derivative problem for degenerate hyperbolic equation of second order
一类退化型的二阶双曲方程的斜微商边值问题 |
| 8. | Derivative action control
微商控制 |
| 9. | Oblique derivative problems for quasilinear degenerate elliptic equations of second order
二阶拟线性退化椭圆型方程的斜微商问题 |
| 10. | The oblique derivative problem for hyperbolic equations of second order in general domains
二阶双曲型方程在一般区域上的斜微商问题 |
