focus-coil assembly

例句：

1. 1.The new device uses a focus-coil assembly to improve its accuracy.
   这款新设备使用了聚焦线圈组件来提高其准确性。
2. 2.The engineer carefully assembled the focus-coil assembly before starting the project.
   工程师在开始项目之前仔细组装了聚焦线圈组件。
3. 3.The manufacturer claims that their focus-coil assembly is more efficient than others in the market.
   制造商声称他们的聚焦线圈组件在市场上比其他产品更高效。