油压
2.Hydraulic pump is the power unit of the hydraulic puller(hudraulis press, hydraulic pipe bender, hydraulic jack).
5.Analysis on Mechanism of Resistance Characteristics of Oil Dampers on Speed Increased Cars
7.The power pack source is directly by diesel engine driven; transmit simply, easy to control and maintain.
9.Development of Synthetical Performance Test-bed of Oil Absorber Used in High-speed Train
10.Mechanical (Precision machine/hydro/air circuit )maintenance high skill experience.

