由于作者没有绕线包的经验，这个变压器是完全手绕的。

Since the author had no experience with winding transformers, this transformer was wound by hand.

youdao

由于作者没有绕线包的经验，这个变压器是完全手绕的。

Since the author had no experience with winding transformers, this transformer was wound by hand.

youdao