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| Russian | English |
| гайтлеровская единица | cascade unit (длины) |
| гайтлеровская единица | radiation unit (длины) |
| гайтлеровская единица | Heitler unit (especially in theory of electron-photon showers, длины) |
| гайтлеровская единица | radiation length (of а relativistic particle, decrease of initial energy by a factor e, длины) |
| каскадная единица | Heitler unit (especially in theory of electron-photon showers) |
| каскадная единица | radiation length (of а relativistic particle, decrease of initial energy by a factor e) |
| лавинная единица | Heitler unit (especially in theory of electron-photon showers) |
| лавинная единица | radiation length (of а relativistic particle, decrease of initial energy by a factor e) |
| ливневая единица | shower unit (radiation length x ln 2) |
| радиационная единица | Heitler unit (especially in theory of electron-photon showers) |
| радиационная единица | radiation length (of а relativistic particle, decrease of initial energy by a factor e) |