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| core ingredient (bigmaxus); major piece (olga garkovik); important constituent (Ремедиос_П); important part (Our dry-dock facility is an important part of the West Coast marine industry, servicing the vessels we all rely on for transportation, safety and movement of goods. ART Vancouver) | |||
| major asset; major plank | |||
| linchpin (The monarchy was the linchpin of the nation's traditions and society. Val_Ships) | |||
| essential element (питания) | |||
| important feature | |||
| critical part (Johnny Bravo) | |||
| важный элемент: 16 phrases in 13 subjects |
| Automated equipment | 2 |
| Aviation | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Mechanics | 2 |
| Military | 1 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 1 |
| Psychology | 1 |
| Quality control and standards | 2 |