名词

1. 散热器;暖气装置
A radiator is a hollow metal device, usually connected by pipes to a central heating system, that is used to heat a room.

2. （汽车等的）水箱，冷却器，散热器
The radiator in a car is the part of the engine which is filled with water in order to cool the engine.

1. a mechanism consisting of a metal honeycomb through which hot fluids circulate
heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan

2. heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings

3. any object that radiates energy