两种系统都使用弹簧或顶针相对于其配对体的不稳定性来形成偏置效果。

Both systems use the spring or plunger instability against its counterpart to create the bias effect.

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我们做过演示的，弹簧连接两个振动物体，但是质量重心，却保持稳定速度。

We did a demonstration there with two vibrating objects with a spring, but yet the center of mass was moving with a constant velocity.

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弹簧寿命值高并且稳定；

Spring life value is high and stable;

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