“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	Folk Mulian Culture of China Folk Museum of Dingcun Village in Linfen folk music folk music society Chui Ge Hui in Ziwei village of Ding county, Hebei province Folk Music Society Qingyin Hui in Chengde city, Hebei province folk narrative long song folk newspaper room folk opera folk psychology folk rhyme folks folk song movement Folk Song of States folk song of Yugur nationality Folk Song Opera Performance Center of Longyan County folk songs and ballads Folk Songs Collected by Pu Songling folk songs of Blang nationality Folk Songs of States Folk Songs of Wu Folk Songs of Yue Area folk song troupe Folk Song Week folksonomy folk sport

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