 |
| |||
| American National thread; V-thread; unified screw thread; V thread; Vee-thread; triangular thread | |||
|
filetage triangulaire : 30 短语, 1 学科 |
| 技术 | 30 |
|
| |||
| American National thread; V-thread; unified screw thread; V thread; Vee-thread; triangular thread | |||
|
filetage triangulaire : 30 短语, 1 学科 |
| 技术 | 30 |