CLabbr.车辆荷载(=car load)abbr.中心线(=center line)abbr.大陆法(=civil law)abbr.普通法（=common law）Cleto克莱托

1. The origin of the unit vibration in small guide vane opening is analyzed when the unit is closing and the optimal scheme of the unit closing law is suggested.
   本文拟对关机过程中导叶小开度振动原因进行分析，并对机组关闭规律的优化方案及实施过程进行介绍。