The detailed forms of the functional equations and the final governing equations for solutions are given for the cases of plane strain and plane stress.
2
依据牛顿第二定律列出运动微分方程序，解方程序并求得计算瞬时速度的公式。
On the basis of Newton's second Law, a motion differential equation has been put forward, by which a formula to calculating instantaneous velocity has been obtained.
3
本文在前人研究的面着色问题基础上，运用欧拉公式和握手定理通过解方程组得到连通平面图的面色数。
In this paper, Euler's formula and Handshaking lemma is used to obtain the face chromatic number of a planar graph by solving equations.
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