如果你把铜线缠绕在两个绕线板上，大约绕上200圈。

If you coil copper wire around two fascias, for about 200 turns.

youdao

如果你把铜线缠绕在两个绕线板上，大约绕上200圈。

If you coil copper wire around two fascias, for about 200 turns.

youdao