wˌɛn ðə θˌɜːmoʊdaɪnˈæmɪk kəndˈɪʃənz ɑːɹ mˈɛt, ðə vˈeɪpɚz ɹɪˈækt wɪððə ɡˈæs ɪnðə vɪsˈɪnᵻɾi ʌvðə sˈʌbstɹeɪt tə fˈɔːɹm fˈɪlmz.
When the thermodynamic conditions are met, the vapors react with the gas in the vicinity of the substrate to form films.