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.

辞典例句

In fact, the spring of the absorber is not massless.

实际上, 避振器的弹簧具有质量.

互联网

An all - pervading , infinitely elastic, massless medium formerly postulated as the medium of propagation of electromagnetic waves.

以太,能媒一种在以前被假定为电磁波的传播媒质并具有''.'绝对'.''连续性 、 ''.'高度'. ''弹性的极其稀薄的媒体.

互联网