牵引

• Study of speed characteristics of zd109c traction motor
  牵引电动机速率特性研究
• Aircraft towing and lifting gear . general remarks
  飞机牵引和起重装置.一般说明
• Traction switch for electric traction ; direction lever
  电力牵引用牵引开关.换向杆
• Electric traction ; wires for earthing and return current
  电力牵引.接地线和回流线
• Dfh24 night train in the kunming bei station
  昆明北?东方红24形牵引夜行列车052
• Distance between jaw and front end of towing vehicle
  牵引叉销至车辆前端的距离
• Air foil surfaces , lift - and - drag coefficients
  空气流经表面抬升和牵引的系数
• Dsc - based ac drive control system in electric traction
  的电力牵引交流传动控制系统
• Influence of harmonics on traction transformers losses
  谐波对牵引变压器损耗的影响