The implications of the first cosmic velocity and the second cosmic velocity are discussed. the blurred knows relative to the two velocities are cleared.
讨论了第一和第二宇宙速度的含义，澄清了与这两个速度有关的一些模糊认识。
The implications of the first cosmic velocity and the second cosmic velocity are discussed. the blurred knows relative to the two velocities are cleared.
讨论了第一和第二宇宙速度的含义，澄清了与这两个速度有关的一些模糊认识。
应用推荐