[电] holding coil
... 保持系 {物} maintainer line; 保持线圈 holding coil; 保持阳极(维持电弧阳极) holding anode; ...
locking coil
... locking clutch 锁紧离合器 locking coil 保持线圈 locking collar 锁圈 ...
holding winding
... 保持架 cage 保持线圈 holding winding 保护压力 rptection pressure ...
hold in winding
... hoist 举升 hold in winding 保持线圈 holddown pin 拉紧销钉 ...