TY JOUR TI EXPERIMENTAL DETERMINATION OF THE RELATIVE SPEED OF PARTICLES IN THE CONDITIONS OF PNEUMOTRANSPORT KW pneumatic transport KW two-phase flow KW air flow KW relative particle velocity KW indicator particle JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Zeman, D.A. AU Shishkin, S.F. AU Shishkin, A.S. AU Barakovskih, D.S. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov