The generator is made from a coil of wire (about 1000 turns) wound around the last 3 cm, or so, of a large nail.
该发电机是由一个线圈(约1000转)3厘米，左右一个大钉子，伤口。
The coil is a wound conductive wire having a cross-section of rectangular-shape.
线圈是通过卷绕截面为扁平形状的导线而得到的。
The coil is a wound conductive wire having a cross-section of rectangular-shape.
线圈是通过卷绕截面为扁平形状的导线而得到的。
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