PWR
noun [ C ] physics specialized uk/ˌpiː.dʌb.əl.juːˈɑːr/ us/ˌpiː.dʌb.əl.juːˈɑːr/
压水反应堆（pressurized water reactor的缩写）
abbreviation for pressurized water reactor: a device for producing nuclear power that uses water at high pressure to control the production of heat