| 1. | Directional control combination valve with 2 - speed for ships 船用双速换向组合阀 |
| 2. | Traction switch for electric traction ; direction lever 电力牵引用牵引开关.换向杆 |
| 3. | Hydraulic fluid power . multiple directional valve . requirements 液压多路换向.阀技术条件 |
| 4. | Shaft guide rails bearing blocks and end stops 光轴导轨轴承座和换向挡块 |
| 5. | Hydraulic fluid fower . multiple directional valve . test methods 液压多路换向阀.试验方法 |
| 6. | Auto classification of dc - electromotor sparks 直流电机换向火花的自动分级 |
| 7. | Hydraulic fluid power - solenoid operated directional valve 液压电磁换向阀 |
| 8. | Permanent magnet segments ; limiting values of visible faults 永磁换向片.可见缺陷极限值 |
| 9. | Rolling ring drives with reversal slowdown feature 换向减速滚动环驱动器 |
| 10. | The fault study of pilot valve in magnetic directional valve 电磁换向阀中先导阀的故障分析 |