明轮外壳

例句：

1. 1. The car's engine is located under the hood, and the exhaust pipes are attached to the front of the engine.
   汽车的发动机位于车头下方，排气管连接到发动机前部。
2. 2. The engineer carefully removed the old wheel casing to replace it with a new one.
   工程师小心翼翼地取下旧的轮壳，换上新的。
3. 3. The wheel casing is made of high-quality steel, providing excellent durability and strength.
   轮壳由优质钢材制成，具有出色的耐用性和强度。