The characteristic equations of the two equations are identical.
两方程对应的特征方程是恒等的。
a constant speed, value, etc
恒定速度、 恒值等
Our sun is an average size star.
太阳是中等大小的恒星。
The Study of Weyl-Heisenberg Frame Identity;
Weyl-Heisenberg框架恒等式的研究
Of, relating to, or indicating equal or constant temperatures.
恒温的属于，关于，或显示相等或恒常温度的
Under these conditions the conservation of energy is equivalent to the conservation of mass.
在这种条件下，能量守恒和质量守恒是相等的。
An equation that is satisfied by any number that replaces the letter for which the equation is defined.
单位（矩）阵定义式中的字母对任一数字都使恒等式成立的恒等式
the identity under numerical multiplication is 1.
在数字的倍数下的恒等式是。
Commutative Conditions of Rings with Variable Identical Equation;
可变恒等式条件下的环的交换性条件
A transformation from identities of Fibonacci numbers to congruence of Lucas numbers;
从Fibonacci数的恒等变换到Lucas数的同余式
On the Identity Proof of ｛F_ n｝;
关于{F_n}的一类恒等式的证明
Demonstration for Several Identities of Stirling Numbers of the Second Kind
关于第二类stirling数的几个恒等式的证明
Commutativity of Semiprime Rings with Constraints on Varying Polynomial Equality
满足某可变恒等式的半质环的交换性
Proof of an identity involving Catalan triangle number
关于Catalan三角数的一个恒等式的证明
Theory of Boundary on Isopleth of Multicomponent Phase Diagrams (Ⅰ)--Regular Section
恒压等成分面的边界理论(Ⅰ)——规则截面
constant region
[免疫球蛋白等分子的]C区，恒定区
identity equation
计量经济或经济统计中的恒等方程式
A process taking place at constant temperature is said to be isothermal.
温度恒定时发生的过程叫做等温过程。