“percussion and rotary drilling”的概念、定义、翻译、参考文献-科学参考

单词	percussion and rotary drilling
释义	percussion and rotary drilling Encyclopedia 工学钻井方法释 percussion and rotary drilling冲击旋转钻井在普通旋转钻进的基础上同时使用冲击器，使钻头在冲击动载和静压旋转的联合作用下破碎岩石的钻井方法。
随便看	Theses on Traditional Literature The Setting Sun Theseus the Seven Former Scholars Society The Seven Lamps of Architecture the Seven Latter Scholars Society The seven poets of Yantai The Seven Samurai The Seventh Company The Seventh Seal The Seventh Sister and the Snake Lad the seventy-five dharmas (of the Abhidharmakośa-bhāsya) the seven wastes The Seven Who Were Hanged The Seven Year Itch the severe debris flow hazards in wenjia gully，Sichuan province the sex/gender system The Shadow of Arms The Shang City Site Park of Zhengzhou The Shanghae Serial The Shanghai Institute of Applied Physics(SINAP)of the Chinese Academy of Sciences The Shanzuo Scholars Society The Shaolin Temple the shared development The Shaw Screen: A Preliminary Study

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