flatwise coil

例句：

1. 1. The flatwise coil is the key to the device's operation.
   平直绕组是该设备运行的关键。
2. 2. The engineer designed the flatwise coil with precision.
   工程师以精确度设计了平直绕组。
3. 3.The flatwise coil has a unique structure that makes it efficient in energy conversion.
   平直绕组具有独特的结构，使其在能量转换中非常高效。