Centrifugal machines are connected to the motor drive directly instead of through a gearbox.

离不通过调速箱直接与电驱动装置相。

This paper resumptively introduces the gist of design of electromagnetism, structure and so on of the large synchronous motor driving mine winder.

概括了矿井提升同步电动的电磁、结面的设计要点。