00591naa#a2200169#i#450# EN\\bibl\40525 20241122153043.5 2073-1574 20201118b2020####ek#y0engy0150####ca RU Experimental detection of mechanical efficiency of marine diesel engines Journal article Astrakhan Astrakhan State Technical University 2020 9 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Shuraev Oleg Petrovich vestnik.astu.org