Percent shear fracture appearance is an important factor to evaluate neutron irradiation embrittlement of nuclearpressurevessel steel.
在核压力容器钢的中子辐照脆化评价中，断口剪切面积百分比是一个重要的参数。
2
The entire "hardware" of the nuclear reactor - the pressurevessel and all pipes, pumps, coolant (water) reserves, are then encased in the third containment.
核子反应堆全部的“硬件”——压力管，所有的管道，泵、冷冻剂(水)储备，通通放入第三个容器。
3
The nuclear fuel is encased in hard alloys to construct fuel rods; the reactor core that these rods make up, and the water it sits in, are contained within a steel pressurevessel.