| 1. | In 1961, auto manufacturers began installing crankcase emission control system on cars built for registration in california .
早在1961年，汽车制造厂商便开始在汽车制造时安装曲轴箱有害污染控制系统，并在美国加利福尼亚州注册。 |
| 2. | Ecs evaporaative emission control system
燃油蒸发污染控制系统 |
| 3. | Eecs evaporative emissions control system
油气蒸发控制系统 |
| 4. | Crankcase emission control system
曲轴箱排放物控制系统 |
| 5. | Evaporative emission control system
蒸发排放物控制系统 |
| 6. | Exhaust emission control system
排气排放物控制系统 |
| 7. | Vapor emission control system
蒸气排放控制系统 |
| 8. | Ecs emission control system
废气控制系统 |
| 9. | Emission control system
废气控制系统 |
| 10. | It ' s proved that ours design of emission control system can reduce the emission of motorcycle efficiently
试验证明：该设计系统可以有效的降低摩托车污染排放。 |
