| 1. | The disc is stem guided on all sizes
所有通径阀门的这种阀瓣是通过阀杆引导的。 |
| 2. | Correlation and path analysis of maize ear characters
玉米果穗性状的相关和通径分析 |
| 3. | Complete valve data : figure number and valve size
完整的阀门参数：型号和阀门通径。 |
| 4. | Correct sizing of check valves is important
正确选择止回阀的通径很重要。 |
| 5. | Correct sizing of stop - check valves is important
截流止回阀的通径正确计算选择非常重要。 |
| 6. | No packing gland , packing only in these sizes
没有填料压盖，在这些通径的阀门里只有填料。 |
| 7. | Valve size , figure number or description
阀门通径，型号或规格说明。 |
| 8. | Correct sizing of swing check valves is important
旋启式止回阀通径的正确计算和选择非常重要。 |
| 9. | Where is the rabbit for drifting the casing
套管通径规在哪里 |
| 10. | Where is the rabbit for drifting the casing
套管通径规在哪里 |
