radiator core fin

例句：

1. 1.The new car has a radiator core fin that helps to cool the engine.
   这款新车有一个散热器核心鳍片，有助于冷却发动机。
2. 2. The engineer replaced the faulty radiator core fin with a new one.
   工程师用一个新的散热器核心鳍片替换了故障的部件。
3. 3.The radiator core fin is an important part of the cooling system in the car.
   散热器核心鳍片是汽车冷却系统中的一个重要部分。