built-up coil

例句：

1. 1.The engineer designed a built-up coil for the generator to increase efficiency.
   工程师为发电机设计了一个积层线圈以提高效率。
2. 2. The new car has a built-up coil that provides better acceleration.
   这款新车有一个积层线圈，提供了更好的加速性能。
3. 3. The circuit board uses a built-up coil to connect all the components together.
   电路板使用一个积层线圈将所有组件连接在一起。