 |
| |||
| cylindrical gears; crossed helical gear; helical gears; spiral gear; spur gears | |||
| ελικοειδείς οδοντοτροχοί: 4 phrases in 1 subject |
| Mechanic engineering | 4 |
|
| |||
| cylindrical gears; crossed helical gear; helical gears; spiral gear; spur gears | |||
| ελικοειδείς οδοντοτροχοί: 4 phrases in 1 subject |
| Mechanic engineering | 4 |