TY JOUR TI Assessment of the technical condition of friction pairs of ship's mechanisms for products of wear in lubricants KW non-selective diagnostics KW friction KW wear products KW lubricating oil KW ferrograf JO Operation of Maritime Transport AU Palchik, K.S. AU Krugova, I.M. AU Ogurtcov, D.V. PY 2020 IS PB Budget Educational Institution of Higher Education “Admiral Ushakov State Maritime University”