Neutrinos and the hypothetical gravitons, also massless particles, move at the same speed as light.
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.
In fact, the spring of the absorber is not massless.
实际上, 避振器的弹簧具有质量.
A hypothetical massless, neutral elementary particle believed to mediate the strong interaction that binds quarks together.
胶子假设的无质量的中性基本粒子之一,被认为能传递一种把夸克结合在一起的强大的相互作用力量.
Neutrinos are exceedingly light, but not strictly massless.
来自SA
That is unless this ball is totally massless.
来自SA