“正循环钻进”的概念、定义、翻译、参考文献-科学参考

单词	正循环钻进
释义	正循环钻进 Encyclopedia 理学钻进方法释 directional circulation drilling正循环钻进冲洗介质经钻杆内腔流向孔底，将钻头切削破碎下来的钻渣岩屑，经钻杆与孔壁的环状空间携带至地面的钻探循环方式。
随便看	pre-shrinking preshrunk Presidential-Libraries Presidential Records Act president of the People's Republic of China president-responsibility system under the leadership of Chinese Communist Party Committee Presidents Cup presidium of the National People's Congress presious metal nanomaterials pre-slotted liner presoak presoaking presolar grains presolar matter presolar nebula presolar object pre-sowing irrigation pre-sowing seed treatment machine presowing treatment of seed presowing treatment of tree seed presplitting presplitting blasting presplitting blasting of open pit Presqu'île crater PRESS

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。