TY JOUR TI COMPARATIVE ANALYSIS OF TWO METHODS OF ELECTROEROSION FIRMWARE FOR DEAF MICROHOLES KW electroerosive firmware KW microhole KW electrode-tool KW linear wear KW performance KW efficiency coefficient JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Boyko, A.F. AU Podpryatov, D.V. PY 2020 IS 5 PB Belgorod State Technological University named after V.G. Shukhov