| 1. | From time to time a scraper is passed through the pipeline to remove this corrosion .
不时用清管器在油管内穿过，以清除这种锈蚀。 |
| 2. | Internal combustion engines - piston rings - scraper rings
内燃机.活塞环.刮油环 |
| 3. | Design of automatic control system for 7 . 63m coking scraper
焦炉刮板机自控系统设计 |
| 4. | Analysis on the brocken chain of scraper conveyor
关于刮板输送机的断链分析 |
| 5. | Inspecting specification of scraper bar for chain conveyors
刮板输送机用刮板检验规范 |
| 6. | Earth - moving machinery - safety - requirements for scrapers
土方机械.安全.铲运机要求 |
| 7. | Structure and common fault of scraper conveyer
刮板输送机的结构及常见故障 |
| 8. | Scraper bars for the twin outboard chain conveyors
边双链刮板输送机用刮板 |
| 9. | Application of sgb - 420 40 scraper conveyor in small mine
40型刮板输送机在中小煤矿的应用 |
| 10. | Sludge scraper assembly for accelerated clarifier
机械搅拌澄清池刮泥机 |
