|
|
| 21. | half-and-half joint |
| 对拼接头 |
|
|
| | |
| 22. | upset end joint |
| 加厚接头 |
|
|
| | |
| 23. | vacuum pump adapter |
| 真空泵接头 |
|
|
| | |
| 24. | air tight joint |
| 气密接头 |
|
|
| | |
| 25. | bell-and-plain end joint |
| 套管接头 |
|
|
| | |
| 26. | emergency connector |
| 应急接头 |
|
|
| | |
| 27. | a tee piece |
| 丁字接头 |
|
|
| | |
| 28. | coaxial fitting |
| 同轴电缆接头 |
|
|
| | |
| 29. | grass hopper joint |
| 滑动接头 |
|
|
| | |
| 30. | slim hole joint |
| 小眼接头 |
|
|
| | |