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1·We call that a massless string.

我们叫它无质量绳。

2·Let's call it a massless spring.

我们叫它无质量弹簧。

3·The Standard Model said they should be massless.

标准模型说他们应当没有质量。

4·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。

5·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。

6·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。

7·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。

8·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。

9·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。

10·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。

无质量的

1·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。

2·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。

3·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。