名词恒定，始终如一，不变性
911查询·英语单词
1. 不变化/不变：invariable /不变化的/ | invariableness /不变化/不变/ | invariably /不变化地/一定不变地/常常地/必然地/不变化/
noun
1. the quality of being resistant to variation
Synonym: invariability invariance