座板翻转：弹簧回复，也可做弹簧加阻尼慢回复机构。

Seat Flip: spring back, also can be slow return spring plus damper body.

youdao

将造波水槽内二维浮体牵引弹簧回复液压缸的受力系统简化为弹簧—质量—阻尼器系统，建立数学模型，并根据牛顿第二定律得到运动方程式。

The model of a kind of wave energy device moored on seabed is simplified into a spring-mass-damping system, and then its motion equation is built according to Newton's second law.

youdao

这是回复力，就像弹簧上的那一样。

It's a restoring force, just like with the spring.

youdao