second pitch of coil

例句：

1. 1. The engineer carefully measured the dimensions of the new second coil.
   工程师仔细测量了新第二线圈的尺寸。
2. 2.The second coil is responsible for transmitting electricity to the motor.
   第二线圈负责将电能传输到电机。
3. 3. The second coil was designed to improve the efficiency of the device.
   第二线圈被设计用来提高该设备的工作效率。