| 内容含有不良信息 |
| 内容含有不良信息 |
| the object through space is relative to the reference system of the space. Such different speeds of reference system for the description of the same object, the object through space will be described different. Concrete manifestation of this difference is caused by the different reference system description of the starting point, ultimately resulting in the displacement of different. Reference system through the space and objects through space is the space of the object relative to the reference system to describe the movement of the reference system (or displacement). |