中微子和假想的引力子也是无质量粒子, 它们也以与光相同的速度运动.Neutrinos and the hypothetical gravitons, also massless particles, move at the same speed as light.在本文中, 只简单的讨论了在树图近似下引力子的相互作用势能.In this paper, the interactional potential energy of gravi...
Light was released over us from the summits of the mountains.月光从山顶边洒下来.The clouds raked the mountain summits.云朵掠过山峰.Opportunity calls you to rise to summits.机缘引你登上高峰....