| |||
| echelon grating | |||
| echelon (grating; series of equally thick plates placed together in a stepwise array) | |||
| échelon; échelon grating | |||
| echelon gating | |||
|
Stufengitter : 5 phrases in 2 subjects |
| Optics branch of physics | 4 |
| Physics | 1 |
| |||
| echelon grating | |||
| echelon (grating; series of equally thick plates placed together in a stepwise array) | |||
| échelon; échelon grating | |||
| echelon gating | |||
|
Stufengitter : 5 phrases in 2 subjects |
| Optics branch of physics | 4 |
| Physics | 1 |