以前学过。就是说时间和空间的相对关系,分狭义的和广义的。狭义的认为物体的运动是相对的,时间和速度都是相对的,光速不变。
yǐqián xué guo 。jiùshì shuō shíjiān hé kōngjiān de xiāngduì guānxi ,fēn xiáyì de hé guǎngyì de 。xiáyì de rènwéi wùtǐ de yùndòng shì xiāngduì de ,shíjiān hé sùdù dōu shì xiāngduì de ,guāngsù bù biàn 。
I studied it before. That is the relative relationship between time and space. There are specialized and general theories of relativity. The theory behind specialized relativity is that the movement of physical objects is relative. Speed and time are also relative, with the speed of light being constant.