悬崖
发表于 2025-4-1 02:26:15
Thomas Strowitzki,Klaus Diedrichof time is obtained by specifying three space co-ordinates together with a scalar constant termed its mass. Although it is impossible rigorously to identify any real subdivision of matter with such a concept, the motions of bodies of macroscopic size can be described very accurately by regarding them as collections of particles in the above sense.