| 1. | Three - position four way directional control valve
三位四通方向控制阀 |
| 2. | Hydraulic fluid power - valves - testing method of directional control valves
方向控制阀试验方法 |
| 3. | Hydraulic fluid power - hand and roller operated directional control valve
液压手动及滚轮换向阀 |
| 4. | Three position four - way directional control valve
三位四通换向阀 |
| 5. | Two position three way directional control valve
二位三通换向阀 |
| 6. | Hydraulic fluid power - four - port directional control valves - mounting surfaces
四油口板式液压方向控制阀安装面 |
| 7. | Hydraulic directional control valve
液力方向控制阀 |
| 8. | Hydraulic fluid power . four - port directional control valves . mounting surfaces
四油口板式液压方向控制阀安装面 |
| 9. | Hydraulic fluid power - four - port directional control valves - mounting surfaces
液压传动.四油口定向控制阀.装配面 |
| 10. | Hydraulic fluid power - four - port directional control valves - mounting surfaces
液压流体动力.四孔定向控制阀.安装面 |
