| 1. | Steel pipe welding neck flanges with male and female face
凹凸面对焊钢制管法兰 |
| 2. | Dark green , quilted / red back . standard
深绿色叶，叶面凹凸，红色叶背，标准型。 |
| 3. | Concavity - convexity of functions near extreme points
实解析函数在极值点附近的凹凸性 |
| 4. | Integral steel pipe flanges with male and female face
凹凸面整体钢制管法兰 |
| 5. | The patterns of bumps and indentations evolved by chance
凹凸痕式样是意外地演化出来的。 |
| 6. | Steel pipe blank flanges with male and female face
凹凸面钢制管法兰盖 |
| 7. | Do not use on rough and uneven surfaces
粗糙或凹凸的表面不可使用。 |
| 8. | Hubbed slip - on - welding steel pipe flanges with male and female face
凹凸面带颈平焊钢制管法兰 |
| 9. | Approaching on die stamping technology
凹凸压印工艺应用的技术探讨 |
| 10. | Hubbed socket welding steel pipe flanges with male and female face
凹凸面带颈承插焊钢制管法兰 |
