 |
| |||
| glass jacket | |||
| sheath of glass; glass coating (low-refractive-index sheath around the fibres); glass jacket (low-refractive-index sheath around the fibres) | |||
| Glasmantel: 1 phrase in 1 subject |
| Optics branch of physics | 1 |
|
| |||
| glass jacket | |||
| sheath of glass; glass coating (low-refractive-index sheath around the fibres); glass jacket (low-refractive-index sheath around the fibres) | |||
| Glasmantel: 1 phrase in 1 subject |
| Optics branch of physics | 1 |