pressurized heavy water
/ˈpɹɛʃəɹˌaɪzd ˈhɛvi ˈwɔːtə/
n
English · pressurized heavy water中文 · 加压重水Español · agua pesada a presiónFrançais · eau lourde sous pression
意味：Heavy water that is heated in the reactor core is kept under pressure to prevent it from boiling.