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1. Multifactorial Empirical Model of Three-Cone Bit Gear Oscillation Energy
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3. Analysis of Causes and Preventing Ways of Early Workability Loss of Three-Cone Rock Bit Cutters
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4. Analytical study of “crosshead – slide rail” wear effect on pump rod stress state
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5. Analysis of Materials and Modern Technologies for PDC Drill Bit Manufacturing
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6. Developing a system and criteria for directed choice of technology to provide required quality of surfaces of flexible coupling parts for rotor machines
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Copyright (c) 2019 Nikolaj Volchenko, Aleksandr Volchenko, Dmitriy Volchenko, Pavel Poliakov, Volоdymyr Malyk, Dmitriy Zhuravliov, Vasyl Vytvytskyi, Petr Krasin

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This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN (print) 1729-3774, ISSN (on-line) 1729-4061