The water distribution device is an important part of the Passive ContainmentCooling System (PCCS), which is a key to carry out the function of the PCCS.
非能动安全壳冷却系统(PCCS)水分配装置是PCCS的重要组成部分，也是系统功能能否实现的关键。
2
But a bigger blast could have compromised the containment chamber, too-the quake, in a way, to the cooling system's waterless tsunami.
但是，更大的爆炸可能毁掉控制室，在某种程度上，地震和海啸让冷却系统失灵了。
3
The nuclear fuel rods in reactors one, two and three melted down due to a failure of the cooling systems, causing damage to their containment structures.