On this basis,a new kind of unbending drill collar tool has been designed,which is probably to be a new kind of inclination preventive tool.是什么意思_On this basis,a new kind of unbending drill collar tool has been designed,which is probably to be a new kind of inclination preventive tool.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句