pressure containment vessel

基本解释

A release of pressure from the containment vessel of number 2 reactor appears to be planned.
准备计划释放2号反应堆的主安全壳内的压力。
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。
In reactor 1, and later in reactor 3, steam contaminated with some radioactive elements was allowed out of the pressure vessel and into the larger containment vessel that surrounds it.
在一号反应堆以及随后的三号反应堆中，受到辐射污染的蒸气已经从压力窗口中释放出来，进入了外层的容器。