quadrant coil

例句：

1. 1. The quadrant coil is responsible for the device's primary function.
   四分之一线圈负责该设备的主要功能。
2. 2.In the design of the transformer, the quadrant coil plays a crucial role.
   在变压器的设计中，四分之一线圈起着至关重要的作用。
3. 3. The engineer carefully analyzed the performance of the quadrant coil before making any adjustments.
   工程师在做出任何调整之前仔细分析了四分之一线圈的性能。