This paper presents drilling fluid technology used for big hole,big clearance of annular,owl returning velocity while drilling collapsing complicate formation,that is polymer/MMH drilling fluid.是什么意思_This paper presents drilling fluid technology used for big hole,big clearance of annular,owl returning velocity while drilling collapsing complicate formation,that is polymer/MMH drilling fluid.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句