00656naa#a2200181#i#450# EN\\bibl\39119 20240229192411.4 2073-1574 20200819b2020####ek#y0engy0150####ca RU Analysis of frequency spectrum of outboard motor Hangkai 4.0 noise when nosing Journal article Astrakhan Astrakhan State Technical University 2020 6 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Pokusaev Mikhail Nikolaevich Khmelnitsky Konstantin Evgenievich vestnik.astu.org