RESEARCH ON CUTTINGS MIGRATION IN THE FLOW CORE ZONE AND VELOCITY GRADIENT ZONE OF ANNULAR SPACE IN DRILLING INCLINED HOLE AND HORIZONTAL HOLE是什麼意思_RESEARCH ON CUTTINGS MIGRATION IN THE FLOW CORE ZONE AND VELOCITY GRADIENT ZONE OF ANNULAR SPACE IN DRILLING INCLINED HOLE AND HORIZONTAL HOLE在線翻譯_英語_讀音_用法_例句