| 1. | Manhole closures for pressure vessels of stainless steel
不锈钢制压力容器用人孔盖 |
| 2. | Manhole covers for bunkers and tanks on ships ; seals
船舶贮舱和液槽的人孔盖.密封件 |
| 3. | Manhole closures for pressure vessels of non - alloy steel
非合金钢制压力容器用人孔盖 |
| 4. | Manhole tops , class b 125 - part 3 : covers
. b125级人孔盖.第3部分:井盖 |
| 5. | Manhole tops class b 125 - part 1 : summary
B125级人孔盖.第1部分:综述 |
| 6. | However , it has been typed to the cylinder eyehole cover with c12136
可是汽缸窥视孔盖上写c12136的文字。 |
| 7. | Specification for manhole cover assembly , raised , oiltight , and watertight
可提升的防油防水的人孔盖组件规范 |
| 8. | Manhole covers for sewerage works
污水工程用人孔盖 |
| 9. | Manhole closures ; swivel devices
人孔盖.回转装置 |
| 10. | Brake drum inspection hole cover
闸轮检查孔盖 |
