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。

youdao

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。

youdao

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。

youdao

The bright yellow dome of the steel containment vessel at Unit 4, Fukushima Daiishi nuclear power plant (FDI) is clearly visible amid the pulverized remains of the building in a new video released by the Tokyo Electric Power Company.

FORBES: New Video From Fukushima Shows Containment Vessel Dome Amid Debris

Made of hardened steel that is between four and eight inches thick, the integrity of the containment vessel is critical in preventing enormous quantities of radioactive material from escaping into the environment.

FORBES: New Video From Fukushima Shows Containment Vessel Dome Amid Debris