secondary containment
英[?sek?nd?ri k?n?te?nm?nt]
美[?s?k?n?d?ri k?n?tenm?nt]
[词典] 二次安全壳;
[例句]Hydrogen collected in the secondary containment buildings, where it exploded, blowing the tops off units 1 and 3, and damaging the cooling system of unit 2.
氢气在第二层安全壳内聚集，最终爆炸，将1号和3号的顶盖炸飞，损毁了2号的冷却系统。
In order to add an additional protection from the view point of nuclear safetydefence in depth, the secondary containment is adopted.
从核安全纵深防御的角度，为了再多增加一道安全屏障，设置了二次安全壳。