We can then look at uranium 238 which has a relatively low absorption thermal energy range and essentially has no fission cross section which is why we call uranium 238 a fertile atom.

我们能看看铀238，它有一个，相对低的吸收热能范围，基本上没有裂变横截面，那就是为什么我们称铀238为可转换核素。

youdao

In the new study, the physicists shot xenon atoms with FLASH, an X-ray laser that USES intense photons in the extreme ultraviolet energy range, about forty times the energy of visible light.

在这个新的研究中，物理学家们用一种处在极紫外能量范围的强光子X射线激光器发出的闪光照射氙原子，所用闪光的能量是可见光能量的40倍。

youdao

In the energy range where experimental data is lacking, the theoretic calculation is used.

对缺实验数据的能区，用理论计算数据作了补充。

youdao

"Today,we have signed an agreement, which broadens the reach of our cooperation beyond the supply of nuclear reactors to areas of research and development and a whole range of areas of nuclear energy,".

VOA: standard.2009.12.08

So anything that goes from a higher energy level to 2 is going to be falling within the Balmer series, which is in the visible range of the spectrum.

任何更高能级到2能级2,都是属于Balmer系，它在可见光谱中。

麻省理工公开课 - 化学原理课程节选

We can think about the Lyman series, which is 1 where n equals 1. We know that that's going to be a higher energy difference, so that means that we're going to be in the UV range.

我们可以来看看Lyman系,也就是n等于,我们知道它的能量差更大,所以它在紫外光区内。

麻省理工公开课 - 化学原理课程节选

Other buyout candidates include Southwestern Energy, Range Resources, Rex Energy and Stone Energy.

FORBES: Shell Brushes Off Alaska Setback With $5B Marcellus Buy

For all their extraordinary energy and range, many of the students we encountered lead curiously compartmentalized lives, with little integration between the different spheres of their experience.

NEWYORKER: Get Rich U.

We have the beginnings of a long-range energy policy and although we still have to catch up after decades of inaction, we are making real progress.

FORBES: California dreaming: Why AB32 makes more sense as federal law