radiator
/ˈreɪdɪeɪtə(r); `redɪˌetɚ/ n
1 apparatus for radiating heat into rooms, etc, esp a metal casing through which hot water or steam is circulated （取暖用的）散热器; （尤指以热水或蒸汽循环供热的）暖气装置.
2 device for cooling the engine of a vehicle or an aircraft （车辆或飞机之发动机的）冷却器
This car has a fan-cooled radiator. 这辆汽车有一个风扇冷却器. =>illus at App 1 见附录 1插图, page xii.