| 21. | A improved cone - shaped model is given in order to improve the old cone - shaped model
|
| 22. | Cone - shaped bayonet ring couplings for rolling stock part 11 : intubatton straight couplings
|
| 23. | Cone - shaped bayonet ring couplings for rolling stock part 13 : meter - pipe straight couplings
|
| 24. | Cone - shaped bayonet ring couplings for rolling stock part 15 : cone thread straight couplings
|
| 25. | Deformation observation of the non - survey - marked cone - shaped high object with forward intersection method
|
| 26. | Cone - shaped bayonet ring couplings for rolling stock part 17 : columned thread straight couplings
|
| 27. | Cone - shaped bayonet ring couplings for rolling stock part 20 : cone thread angle coupling bodies
|
| 28. | Cone - shaped bayonet ring couplings for rolling stock part 10 : reducing straight coupling bodies
|
| 29. | Cone - shaped bayonet ring couplings for rolling stock part 14 : meter - pipe straight coupling bodies
|
| 30. | Cone - shaped bayonet ring couplings for rolling stock part 12 : intubatton straight coupling bodies
|
