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| fine threa (Fine threads lack strength and are difficult to tap. VLZ_); fine thread (Fine threads lack strength and are difficult to tap. VLZ_58) | |||
| тонкая резьба: 6 phrases in 5 subjects |
| Automated equipment | 2 |
| Construction | 1 |
| Forestry | 1 |
| General | 1 |
| Oil / petroleum | 1 |