| 单词 | time-invariant | 
| 释义 | > as lemmastime-invariant   time-invariant adj. Physics and Mathematics unchanging with time; that does not depend on time. ΚΠ 1937    Proc. Royal Soc. London A. 158 329  				A Doppler shift is known to be time-invariant under any transformation of time-scale. 1969    Jrnl. Franklin Inst. 287 1  				A mathematical formulation of the communication networks with memory is presented assuming that the sources of traffic are deterministic but not necessarily time invariant. 2006    P. Schneider Extragalactic Astron. & Cosmol. iv. 160/2  				Based on this assumption of time-invariant physical laws, we will study the consequences of the Big Bang model. < as lemmas | 
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