The object particle means to the microcosmic particle that its static mass is not zero, for example, electron atom molecule and so on.
实物粒子是指静止质量不为零的微观粒子，如电子、原子和分子等。
2
A hypothetical particle postulated to be the quantum of gravitational interaction and presumed to have an indefinitely long lifetime, zero electric charge, and zero rest mass.
引力微子一种假想粒子，被假定为引力相互作用的量子，并被推测为具有。
3
From the wave-particle properties of photon, the author presents a method with which the static mass of photon can be deduced to zero.