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。
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。
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。
The calculated reaction probabilities are relatively large in the whole energy range, and have no threshold energy.
反应几率在整个能量范围之内都比较大，且没有阈能。
The high energy range of acoustic excitation, the peaks of combustion noise and major discrete frequencies are identified.
对声激励的高能量区、燃烧噪声主峰以及一些重要的离散频率分量进行了分析和识别。
It is shown that for the same system, under different bias voltages, the spectra of the electron transmissivity change obviously within a certain energy range.
结果表明，不同外加偏压下，高能态电子透射率谱在一定范围内有显著的变化。
To ensure the organization and performance of welded joints, we determined the best welding line energy range, and it provided a basis for the development of the correct welding parameters.
从保证焊接接头的组织和性能出发，确定最佳焊接线能量范围，为制定正确的焊接工艺参数提供了依据。
To ensure the organization and performance of welded joints, we determined the best welding line energy range, and it provided a basis for the development of the correct welding parameters.
从保证焊接接头的组织和性能出发，确定最佳焊接线能量范围，为制定正确的焊接工艺参数提供了依据。
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