Back then, there were two major rival theories about the origin of the Universe: the Big Bang theory and the Steady-State model of the Universe.
当时,对宇宙的起源有两个主要的对立理论:宇宙大爆炸理论,稳态宇宙模型。
2
Last week I introduced you to Being Fat and the TwoState Mind Theory which looked at physical state eating and mind state eating.
上周我向各位介绍的《肥胖与“双食记”理论》着眼于物理性进食与精神性进食。
3
Firstly, the state variables of the reentry vehicle are decomposed into two sub-systems of different time scales using the singular perturbation theory.