00791naa#a2200205#i#450# EN\\bibl\46119 20240723012820.2 2223-4608 20211029b2021####ek#y0engy0150####ca RU Calculation of the main parameters of the ultrasonic oscillatory system for the intensification of gas nitriding processes Journal article Bryansk Bryansk State Technical University 2021 6 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Perekryostova Valeria Alexsandrovna Sukhov Alexandr Vadimovich Levushkina Nadegda Viacheslavovna Nigmetzyanov Ravil Islamovich bstu.editorum.ru