炉 - hearth, furnace, kiln

smelting furnace; blast furnace

nuclear reactor core

fireplace; hearth; stove

atomic reactor; nuclear reactor

blast furnace

cooking stove; burner (gas, electric, etc.); range; cooktop; hob

nuclear power reactor

fireside; hearth; by the fire

hot-blast stove

arc furnace

emergency core cooling system; ECCS

gas-cooled reactor