We call that a massless string.

我们叫它无质量绳。

Let's call it a massless spring.

我们叫它无质量弹簧。

The Standard Model said they should be massless.

标准模型说他们应当没有质量。

It obeys Hooke's Law, and it is also nearly massless.

它遵循胡克定律，几乎是无质量的。

So you have three point masses, and they are connected with massless rods.

你们有个三角物体，它们由无质量棒相接。

Radiation: composed of massless or nearly massless particles that move at the speed of light.

辐射：由以光速运行的无质量或近无质量粒子所构成。

If all particles in the universe were massless, then, the universe would look to them to be infinitely small.

如果宇宙中的所有粒子都失去质量，那么对于这些粒子来说宇宙便会变得无穷小。

Take the recent question of whether neutrinos, a type of near-massless subatomic particle, can travel faster than light.

请看最近的一个热点问题：中微子的传播速度能否超过光速？ 中微子是种亚原子粒子，几乎没有质量。

A massless rope is wrapped around a hollow cylinder of radius 12 cm whose central axis is fixed in a horizontal position.

一个无质量的绳子缠在一个半径为12厘米的空心圆柱上，其中心轴固定在一个水平位置。

Massless particles, including photons, the quanta of electromagnetic radiation, and others, were mentioned in Section 8-8.

没有质量的粒子，包括光子﹑电磁辐射的量子，等等，已在8 - 8节有所叙述。

They are very nearly massless and thus, even at moderate energies, we'd expect them to travel essentially at the speed of light.

它们的质量非常接近零，因此，即使在中等能量下，我们也希望它们以光速传播。

The whole idea gained little attention in the 19th century, since light was thought to be a massless wave, not influenced by gravity.

整个想法在第19世纪自从光被认为是无质量的、不受引力影响以来得到很少的关注。

In the Fermi weak interaction theory and even in the electro-weak unification theory, the neutrino is looked as the massless particle.

在费米弱作用理论乃至弱电统一理论中，都是把中微子当作无静止质量的粒子来处理的。

In addition, the applicability of the widely used massless foundation approach to the dam-foundation interaction analysis is discussed.

此外还讨论了工程中广泛应用的无质量地基模型对于相互作用分析的适用性问题。

In general relativity theory, graviton is the massless tensor particle, which results in gravitation action in proportion to the energy.

在爱因斯坦引力理论下，引力子为零质量的张量粒子，它导致了粒子之间存在着正比于能量的引力作用。

The electromagnetic attraction is pictured as being caused by the exchange of large Numbers of virtual massless particles of spin 1, called photons.

人们将“电磁吸引力”“描绘成”是由于“称作”“光子”的“无质量的”自旋为1的“粒子”的交换所引起的。

A discovery that neutrinos, virtually massless particles, convert into other forms known as muon and tau before they leave the sun, solving a 40-year-old mystery.

发现中微子(几乎是无质量的粒子)在离开太阳之前可转化介子，解开了一个40年的谜。

Considering the background of massless neutrino, probes into the effect of the background field on the gravitational field of a global cosmic string outside the core.

考虑静质量为零的中微子背景，探讨背景场对整体宇宙弦核外引力场的影响。

This medium is called Ether, which is an omnipresent, boundlessly resilient, massless medium unable to be sensed that was formerly theorized as the medium that carried light.

这种介质称为以太，它是一种无所不在的，有无限弹性的，无质量的，不不能被感知的介质，在从前它被理论化为能运载光的介质。

If all particles in the universe were massless, then, the universe would look to them to be infinitely small. And an infinitely small universe is one that would undergo a Big Bang.

如果宇宙中的所有粒子都是无质量，那么宇宙对于他们就会是初始时那样无限小，并且无限小的宇宙会经历一次大爆炸。

SA (spectral acceleration) is approximately what is experienced by a building, as modeled by a particle on a massless vertical rod having the same natural frequency of vibration as the building.

而光谱加速度大致上是一座建筑物承受的加速度，科学家把一颗与目标建筑物具有相同自然频率的粒子放在一个近似无质量的垂直控制棒上进行模拟得出此数据。

It is observed that results from the critical stabilization must be applied in the construction of the stabilizing law for a tethered satellite system when the tether is assumed rigid and massless.

当拴连卫星系统的拴连约束假设为刚性且无质量时，在构造镇定律时，必须应用有关临界镇定的一些结果。