The Beautiful Equation: Euler's identity.
上图：美丽的欧拉等式。
Equation is different from arithmetic identity in that it contains unknown quantity which can join operations.
方程与算数的等式不同在于它含有可以参加运算的未知量。
A power-like equation, a Virial-like theorem, an integral variational principle and a differential variational principle for the system are deduced by using the time-integral identity.
给出系统的时间积分等式，并由此等式导出类能量方程、类维里定理、一个积分变分原理和一个微分变分原理。
Then we prove the isometrical identity and inversion formula of the solution of the wave equation.
得到了波动方程的解的反演公式及等距等式，为再生核理论的应用提供了新的思路。
The recursive equation is derived from a cross - identity basal on a formula of matrix analysis .
递推方程是由基于矩阵分解公式的交叉等式导出的。
It is the equation of layout for corporate identity system. it is the whole spread system with the concept of modern design, theories of corporation administration and human thoughts.
它是指企业形象识别规范的综合体，是一种结合了现代设计观念，企业管理理论及人文思想的实体和非实体性的整合系统。
It is the equation of layout for corporate identity system. it is the whole spread system with the concept of modern design, theories of corporation administration and human thoughts.
它是指企业形象识别规范的综合体，是一种结合了现代设计观念，企业管理理论及人文思想的实体和非实体性的整合系统。
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