Air Force One has a gym, electronic defence units and shielding to protect it from nuclear blasts.
空军一号配有一间健身房，电子防御装置和能使其免受核爆炸破坏的外壳。
Analysis of the activated background spectrum shows that natural copper is an ideal shielding material in fast neutron nuclear reactions.
通过分析天然铜的活化本底谱，可以看出它是快中子核反应中的最理想的屏蔽材料之一。
A shielding design with multilayer combination has been introduced for on-line measurement of nuclear physics experiment with heavy ion accelerator.
本文主要介绍了重离子加速器核物理实验在线测量中为降低辐射本底而采用的多层组合屏蔽设计。
Taking a spent fuel shipping cask as calculated model, detailed criticality safety, nuclear heat distribution and shielding calculations and sensitivity analysis of some parameters were performed.
以某型乏燃料运输容器为计算模型，对其进行了临界安全、核热分布以及辐射屏蔽计算，并对临界计算和屏蔽计算的部分参数进行了敏感性分析。
The problems of shielding from thermal and nuclear radiations are thus quite distinct.
这种辐射的基本问题仍在继续使他们感到苦恼。
The problems of shielding from thermal and nuclear radiations are thus quite distinct.
这种辐射的基本问题仍在继续使他们感到苦恼。
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