Pickling or bright dipping in acid can remove this magnetic film and restore the non-magnetic properties.

酸洗或明亮的酸浸，可以删除这个磁性薄膜和恢复非磁学性质。

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Pickling or bright dipping in acid can remove this magnetic film and restore the non-magnetic properties.

酸洗或明亮的酸浸，可以删除这个磁性薄膜和恢复非磁学性质。

youdao