You can never break the 'north' part of a magnet from the 'south' side.

你永远无法将磁“北”极与磁“南”极分开。

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Permanent magnet force to maintain bi-side, energy saving.

永久磁钢力保持双稳态，节能。

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Permanent magnet force to maintain bi-side, energy saving.

永久磁钢力保持双稳态，节能。

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