 |
| 保 护 器: 201 phrase in 18 subjects |
| Computers | 3 |
| Construction | 3 |
| Electrical engineering | 4 |
| Electronics | 60 |
| Forestry | 1 |
| General | 70 |
| Information technology | 3 |
| Machine components | 1 |
| Medical | 1 |
| Military | 2 |
| Name of organization | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Oil processing plants | 2 |
| Oilfields | 1 |
| Radio | 1 |
| Technology | 44 |
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