| 1. | Valve spring compressor kit valve spring compressor 单人操作拆装气门弹簧工具组 |
| 2. | Internal combustion engines - valve springs - specification 内燃机气门弹簧技术条件 |
| 3. | Optimized design of 50crvasteel diesel engine valve spring 钢柴油机气门弹簧的优化设计 |
| 4. | 3d finite element analysis of a variable stiffness valve spring 变刚度气门弹簧三维有限元计算分析 |
| 5. | Oil tempered wire for valve springs 阀门弹簧用油回火金属丝 |
| 6. | Oil tempered chromium - vanadium valve spring quality wire and springs 油回火铬-钒汽门弹簧优质钢丝和弹簧 |
| 7. | Standard specification for chromium - vanadium alloy steel valve spring quality wire 阀簧级铬矾合金钢的标准规范 |
| 8. | Standard specification for steel wire , oil - tempered carbon valve spring quality 阀簧级油回火碳素钢丝的标准规范 |
| 9. | Standard specification for steel wire , chromium - silicon alloy valve spring quality 阀簧级铬硅合金钢丝的标准规范 |
| 10. | Pressure regulator valve spring 减压器阀弹簧 |