They turned on two additional main coolant pumps.

他们又启动了两台主冷却泵。

youdao

The reactor and its backup systems are designed to handle this type of accident by including backup power systems to keep the coolant pumps working.

反应器和它的备份系统设计中包括，当这种事件发生的时候，备份系统需要保持冷却系统的运行。

youdao

Validation of the Westinghouse AP1000 as China's standard third-generation reactor model has been postponed pending modifications to reactor coolant pumps Chinese officials said last week.

对西屋ap1000作为中国第三代标准堆型的验证工作已推迟，将视反应堆冷却剂泵的修改工作而定，中方官员上周说。

youdao

Sheehan said one of the four reactor coolant pumps appears to have stopped working.

CNN: Pump triggers Three Mile Island reactor shutdown, NRC says

Integral reactor systems -- including the reactor vessel itself, six steam generators, five primary coolant pumps, 12 isolation valves and more -- were stored outside for up to 18 months, exposed to highly corrosive tropical sea air and weather.

CENTERFORSECURITYPOLICY: A Chernobyl reminder just off our shores

The tsunami destroyed the diesel generators that provide power to drive the pumps that circulate the water coolant through the reactor that removes decay heat.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi