The nuclear core in many newer reactors, including the ones in Japan, is enclosed by a steel containment vessel.
很多新式反应堆的堆芯，包括日本核设施使用的这些，都由钢制的反应堆安全壳密封。
Water in the core began to boil off, raising the temperature and pressure inside the massive steel containment vessel.
堆芯的水开始沸腾，导致钢结构的安全壳内部的温度和压力开始升高。
That in turn sits within a larger steel structure, the primary containment vessel.
上面的这些结构外面还有一个更大的钢结构主容器。
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。
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。
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