the quality of being unchangeable; having a marked tendency to remain unchanged
例句
例句
This paper also discusses the principle of the electromagnetic power unchangeableness to some extent.
文章还对坐标变换过程中的电磁功率不变性原则进行了讨论。
The test indicates that the method not only can reach to a satisfactory speeding effect, but also can keep very well the failure mechanism unchangeableness.