hydraulic power pack造句

• Underwater hydraulic power pack
  水下液力动力装置
• Hydraulic concrete crusher detail : all round , extremely efficient concrete crusher system for concrete demolition in general , and reinforcement exposure in particular . the system works immissionfree , i . e . : it does not produce any noise , dust or cibrations and operates without water . description : pliers qty 1 , hydraulic power pack qty 1 , 10m long oil pipe set of hoses , high pression qty 2 , accessories bag qty 1
  启动电机带动油泵运转，液压油直接返回油箱手动转动换向阀三位四通阀一个位置后，液压油进入系统推动活塞，活塞杆伸出，带动钳体收缩，从而破碎钢筋混凝土结构，反向转动换向阀，钳体松开，完成一个工作循环。