equations

Economic models often lead to the study of systems of equations.

经济模型经常导致对方程组的研究.

Lame-Maxwell equations of equilibrium have important applications in photoelasticity.

拉密 - 麦克斯韦平衡方程在光测弹性力学中具有重要的作用.

To derive the transformation equations , we return to Fig. 14-1.

为了求出这个变换式, 我们回顾图14 - 1.

Thus, enough equations are generated to make the problem determinate.

于是, 产生了足够的方程使问题为定解.

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.

The characteristic equations of the two equations are identical.

两方程对应的特征方程是恒等的.

After each reduction, the remaining equations remain symmetric and banded.

在每次约化后, 余下的方程是保持对称和带状的.

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.

Section 7.2 contains a resume of the fundamental equations.

第7.2节包括那些基本方程的摘要.

The overwhelming majority of nonlinear differential equations are not soluble analytically.

绝大多数非线性微分方程是不能用解析方法求解的.

The situation can be handled conveniently by equations as follows.

这种情况可以用下面的公式很方便地表达.

Such steps mean the simultaneous solution of either two linear equations.

这样的步骤意味着同时求解两个线性方程.

Einstein's equations showed the Universe to be expanding.

爱因斯坦的方程式表明宇宙正在膨胀。

Equations are generally written with a two-bar equals sign.

等式通常用两道横的等号来表示。

This overall set of equations will now be determined.

现在将要确定这个总的方程组.