The reactor vessel is surrounded by a thick steel-and-concrete primary containment vessel, equipped with a water reservoir designed to suppress overheating of the vessel.
反应堆由一个钢与混凝土构成的厚实外壳(第一层安全壳)保护着，另外还配有一个蓄水库，防止反应堆过热。
2
The use of steelandconcrete has allowed the builders to perch a light concrete dome on eight slender columns.
钢筋混凝土的使用使建筑者们能将一个轻巧的混凝土穹顶架在8根细柱上。
《柯林斯英汉双解大词典》
3
The third containment is a hermetically (air tight) sealed, very thick bubble of the strongest steelandconcrete.