谐波螺旋式阀门采用双波谐波螺旋传动，实现由圆周运动向直线运动的转化，实现阀门的启闭。
The harmonic screw type valve is driven by the double wave harmonic screw. It can transform circle movement to line movement for the closing and opening of the valve.
通过对机械式离心调速器系统增加一个延迟反馈控制器，利用它控制系统从混沌运动转化为周期运动。
A method of controlling chaos by employing a delayed feedback controller is developed to guide chaotic motions towards regular motions.
艺术竞赛慢慢转化为在奥林匹克运动会期间举行的艺术节，至今大家把关注点更多注重于开闭幕式的表演。
Art competition gradually transformed into an art festival held during the period of the Olympics. And now, most people put their focus on the Opening and Closing Ceremony more than the actual games.
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