Looking from company investing return of middle - small company, using compendious method level off interface of coppery and aluminous generatrix.

• 本文从中、小型成套电气控制设备厂的投资回报率着眼,采用较简易方法,阐述用液压千斤顶对铜、铝母线接触面压麻校平处理。