main valve spool

同义词释义

1)main valve spool,主滑阀2)main spool,主滑阀3)primary pilot valve,调速器主滑阀4)main sliding face,主滑面5)main landsliding body,主滑体6)main ring,主滑环7)head pulley,主滑轮8)head pulley end,主滑轮端9)head pulley shaft,主滑轮轴