 |
| |||
| если смотреть (When observed along the axis from a distance of 20 to 40 feet…, the whole lens shall appear equally illuminated. I. Havkin) | |||
| when observed: 5 phrases in 4 subjects |
| Construction | 1 |
| General | 1 |
| Mathematics | 2 |
| Scientific | 1 |
|
| |||
| если смотреть (When observed along the axis from a distance of 20 to 40 feet…, the whole lens shall appear equally illuminated. I. Havkin) | |||
| when observed: 5 phrases in 4 subjects |
| Construction | 1 |
| General | 1 |
| Mathematics | 2 |
| Scientific | 1 |