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| French | English |
| angle de Bragg | grazing angle (a very small glancing angle) |
| angle de Bragg | Bragg angle (reflection angle, in Bragg's condition) |
| angle de diffusion | scattering angle (par collision) |
| angle de rétrodiffusion | backward scattering angle |
| angle de rétrodiffusion | backscattering angle |
| angle de rétrodiffusion | angle of backscattering |
| angle de rétrodiffusion | angle of backscatter |
| angle d'entrée | entrance angle |
| demi-angle d'ouverture | angular half-aperture |