The Big Bang model of cosmology rests on two key ideas that date back to the early 20th century: GeneralRelativity and the Cosmological Principle.
宇宙学中的大爆炸模型可以追溯到20世纪初的两个核心思想：广义相对论和宇宙学原理。
2
This makes the equivalent principle as the one of basis hypothesis of the general theory of relativity to gain more extensive basis.
这使得作为广义相对论基本假设之一的等效原理得到更广泛的依据。
3
For the generalrelativity, the experiments of examining the principle of equivalence, Newton's limitation and inferences introduced by the theory must be included.