Synchro-Dynamic Mechanism:It Maintains an Appropriate Angle Between the Backrest and the Seat with Every Body Movement;

同步倾仰五段式锁定机关：无论使用者前倾或后仰，椅座及椅背均能保持适当的角度；

youdao

The first in our group to have a go, I was seated in a photographic booth and, after tilting my head at an appropriate Angle and lifting an eyebrow at the cameraman's request, he snapped away.

作为我们这个旅行团中第一个尝试的人，我被安排坐在一个拍照亭里，我按摄影师的要求将脑袋扭向了合适的角度并抬了抬眉头，他按动了快门儿。

youdao

Compute the angle the same way, just using the appropriate things.

用合适的计算来求，那么我们要说的概念是。

麻省理工公开课 - 计算机科学及编程导论课程节选