应急堆芯冷却系统是核电站工程安全设施的一个组成部分。
The emergency core cooling system is a component part of engineered safety feature of a nuclear power plant.
除了上充功能，应急堆芯冷却系统运行时，离心上充泵用作高压安注的一部分。
In addition to the charging function, the centrifugal pumps also serve as the high head safety injection pumps during emergency core cooling system operation.
在那次事故中，有一半核反应堆芯在事故发生后的两小时内便融化了，直到工作人员将误关的应急冷却系统开关重新打开，反应堆芯才停止了融化。
There, half the reactor core melted in the first two hours of the accident. The melting stopped when an operator turned on emergency cooling, which had mistakenly been turned off.
在那次事故中，有一半核反应堆芯在事故发生后的两小时内便融化了，直到工作人员将误关的应急冷却系统开关重新打开，反应堆芯才停止了融化。
There, half the reactor core melted in the first two hours of the accident. The melting stopped when an operator turned on emergency cooling, which had mistakenly been turned off.
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