 |
| |||
| multi-start screw thread; multi-start thread; multiple-start screw thread; multiple-start thread; multiple thread | |||
|
filetage multiple : 1 短语, 1 学科 |
| 一般 | 1 |
|
| |||
| multi-start screw thread; multi-start thread; multiple-start screw thread; multiple-start thread; multiple thread | |||
|
filetage multiple : 1 短语, 1 学科 |
| 一般 | 1 |