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| coefficient de Townsend | |||
| constante d'ionisation (of a gas : average energy expended per ion pair formed, divided by electronic charge); coefficient d'ionisation (de Townsend) | |||
| English thesaurus | |||
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| KA (Alex Lilo) | |||
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ionization constant : 2 phrases in 1 subject |
| Radiation | 2 |