| 1. | Technical specifications for centrifugal pumps - class ii
离心泵的技术规范. 2级 |
| 2. | Seal - less rotodynamic pumps - class ii - specification
无密封旋转动力泵. ii级.规范 |
| 3. | Technical specifications for centrifugal pumps - class ii
离心泵的技术规范. ii类 |
| 4. | Seal - less rotodynamic pumps - class ii - specification
无密封的旋转动力泵. ii级.规范 |
| 5. | Fabricators ' data report for class ii vessels
Ii级容器的生产商数据报告 |
| 6. | Class ii biological safety cabinets
二级生物安全箱 |
| 7. | Specification for class ii arc welding of carbon steel pipework for carrying fluids
输送流体用碳钢管道二级电弧焊规范 |
| 8. | Police superintendent , class ii
二级警司 |
| 9. | Police commissioner , class ii
二级警监 |
| 10. | Police supervisor , class ii
二级警督 |
