corner cube
| prism
| corner cube | |
| house. | уголковый отражатель |
| |||
| уголковый отражатель | |||
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corner cube : 21 phrases in 9 subjects |
| Astronautics | 1 |
| Electronics | 3 |
| General | 1 |
| Mass media | 1 |
| Mathematics | 1 |
| Optics branch of physics | 2 |
| Physics | 1 |
| Quantum electronics | 6 |
| Technology | 5 |