这些小磁铁可以自由转动，平时它们的方向杂乱无章，磁性相互抵消，整个物体不显磁性。

These small magnets can free rotation, peacetime its direction desultorily, magnetic mutual offset, the whole object does not show magnetism.

youdao

这些小磁铁可以自由转动，平时它们的方向杂乱无章，磁性相互抵消，整个物体不显磁性。

These small magnets can free rotation, peacetime its direction desultorily, magnetic mutual offset, the whole object does not show magnetism.

youdao