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。
The rotating irradiation model for ND silicon presented in this paper gives distribution, mean value and heterogeneity of the thermal flux on the cross section of silicon.
本文提出的中子掺杂硅单晶旋转辐照模型，给出了热中子通量在硅断面上的分布．平均值和不均匀度。
It is found that these kinds of glasses have good thermal stability, broad FWHM and large stimulated emission cross-section.
结果表明：这种玻璃具有较宽的荧光半高宽、较大的受激发射截面，较好的热稳定性。
The effects of volume fraction, cross section shape of fibers and the relative thermal conductivity of fiber and matrix on thermal conductivity of composites are analyzed in this thesis.
本文通过计算结果比较，分析了复合材料体分比、纤维截面形状、纤维与基体的相对导热系数对复合材料整体导热性能的影响。
This phenomenon is important for analysing the magnetic-thermal stability and designing cross section and selecting copper for multi-filamentary superconducting composites.
弄清尺寸对电阻率的影响，对于分析复合导体的磁-热稳定性，设计复合导体的截面构型和判定、合理选用稳定化用铜是有重要意义的。
There is no visible defect found in the cross-section. Using this two-step metallization method, the in-fiber Bragg grating can be well protected and its thermal sensitivity can be enhanced.
采用这种基于化学镀-电镀的两步法不但可以对光纤光栅进行良好的保护，而且在金属化保护的过程中光纤光栅的温度灵敏度明显提高。
It shows that this method is more available for calculating the thermal stress of the complex cross section of a bo...
表明所提出的方法对截面较为复杂的物体的热应力计算是更为可取的。
It shows that this method is more available for calculating the thermal stress of the complex cross section of a bo...
表明所提出的方法对截面较为复杂的物体的热应力计算是更为可取的。
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