Photons have no mass – they are weightless.
光子没有质量——它们是没有重量的。
Because, you see, there is no mass here.
你们看，这里不存在质量了。
Photons have no mass—they are weightless.
光子没有质量——它们是无重的。
Photons have no mass - they are weightless.
光子没有质量——它们是无重的。
They suggested that all particles had no mass just after the Big Bang.
他们提出大爆炸最初所有的粒子都没有质量。
So you can simply argue that there should be no mass in here, and there isn't.
所以你能轻易看出，这里应该，没有重物，是的没有。
No one starved, there was no mass outbreak of disease, people received medical attention.
没有人忍饥挨饿，也没有大规模爆发疾病，人们收到了很好的治疗。
Prior to late June 2006, no mass die-offs of poultry are known to have occurred in the area.
在2006年6月下旬之前，已知该地区未发生大量家禽死亡。
In pathological morphology, in the ileum and colon, there are multiple ulcers, but no mass.
病理上以回、结肠多发溃疡为特征，无肿块形成；
System is the opposite of the open system, no mass and no energy can flow through the boundary.
孤立系与开系正相反，没有质量或能量，能流过它的边界。
The more they interact, the heavier they become, whereas particles that never interact are left with no mass at all.
粒子间相互作用得越多，则越重，因此从不与其他粒子相互作用的粒子完全没有质量。
However, in order for this unification to work mathematically, it requires that force-carrying particles have no mass.
不过，为了使这二者的统一符合数学计算，需要负责传递力的粒子质量为零。
Photonshave no mass but they still impart momentum when they strike an object... it's a tiny, tiny amount of momentum.
光子没有质量，但是当它们碰撞到物体时仍然会传输动量。这是一种非常微小的动量。
We don't say anything about implicitly here, we're talking about a closed system, so there's no mass leaving the system.
我们不讨论，这是隐含条件，因为我们讨论的是孤立系统，因此系统没有物质流失。
This may seem incredible at first, but it is nevertheless true that sunlight, or light, has momentumeven though it has no mass.
这可能最初让人令人难以置信，但是这确实千真万确，阳光有动量，即使它没有质量。
In order to research its natural circulation, the downcomer part and the riser part is distinguished, where there are no mass and energy transferred between them.
该模型为体现其自然循环的特性，将下降段与上升段区分开，并假定两者之间不存在质量和能量的交换。
Because protons and neutrons have roughly the same mass (and electrons have almost no mass), the helium atom should have about four times the mass of the hydrogen atom.
由于质子与中子的质量大约相等(并且电子几乎没有质量)，氦原子的质量大约应是氢原子质量的四倍。
Please contact GP PD team for packaging color approval before merchandiser's approval (required for WM private label only). No mass printing should be started before this process.
请在采购员确认之前，联系采购部的产品开发部门确认包装颜色(只要求是沃尔玛的专有标签)。在完成此步骤前，不得批产。
And since there were no mass communications in those days, in fact nothing more than word of mouth for most people, that usually meant that the word used was in pretty wide circulation.
由于那个年代没有大众传播工具，词语在人与人之间多为口口相传；也就意味着，一个词语被使用的时候，流传范围已经很广了。
There are no signs, yet, of any mass celebration.
目前还没有任何大规模庆祝活动的迹象。
Under no circumstances should youngsters follow negative information on mass media blindly.
在任何情况下，青少年都不应盲目跟从大众媒体上的负面信息。
However, the mass media are with us for better, for worse, and there is no turning back.
然而，大众媒体和我们在一起，无论好坏，而且没有回头路。
Face-to-face contact is by no means the only form of communication and during the last two hundred years the art of mass communication has become one of the dominating factors of contemporary society.
面对面的交流绝不是沟通的唯一形式，在过去的两百年里，大众传播艺术已经成为当代社会的主导因素之一。
Now, even though it may be difficult to understand how a huge mass of ice can move—or flow, it's another word for it—it's really no secret that glaciers flow because of gravity.
如今，即使想要知道一大块冰如何移动——或换个词讲，漂浮——是非常困难的，但众所周知冰川漂浮是由于重力。
Rats raised in cages full of toys have more brain mass than rats with no toys.
在满是玩具的笼子里养的老鼠与没有玩具的老鼠相比，脑质量大得多。
By 1911, scientists had already measured the charge and mass of an electron. But no one was sure how the atom was structured.
在1911年之前，科学家认为电子带有电荷以及质量，但没有人很确认原子是怎样组成的。
Neutrinos, which have no charge and very little mass, form out of nuclear reactions and particle decays.
质量极小且不带电的中微子，是在核反应和粒子衰变中产生的。
Neutrinos, which have no charge and very little mass, form out of nuclear reactions and particle decays.
质量极小且不带电的中微子，是在核反应和粒子衰变中产生的。
应用推荐