“replacing bit without lifting drills”的概念、定义、翻译、参考文献-科学参考

单词	replacing bit without lifting drills
释义	replacing bit without lifting drills Encyclopedia 理学钻进工艺释 replacing bit without lifting drills不提钻换钻头绳索取心钻进过程中，在不起下钻的情况下，将孔底旧钻头单独或随内管总成一起打捞至地面，并将新钻头单独或随内管总成一起下入孔底进行钻进的作业。
随便看	Yan Jizu Yan Journey Record Yan Jun Yan Junsheng Yan Jupeng Yan Kai Yanka Kupala Yanka Luchina Yan ke Yankee city research Yankee City Series Yan Kejun Yan Keng Benevolent Dramatic Association Yan Lanqiu Yan Laolie Yan Liangkun Yanliang Qu Yan Lianke Yan Lianzhu Yanliao biota Yan Liben Yan Lide Yanlin Column of Li Newspaper Yanling Xian Yan Lingzhang

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