“top drive drilling equipment”的概念、定义、翻译、参考文献-科学参考

单词	top drive drilling equipment
释义	top drive drilling equipment Encyclopedia 工学钻井装备释 top drive drilling equipment顶部驱动钻井装置动力从井架的顶部直接驱动钻具进行旋转钻进，并能完成多种钻井操作的钻井装置。又称顶驱或顶驱装置。
随便看	quarternary structure quarter period quarter-square quarter squares rule quarter-wave line quarter wave plate quarter-wave plate quartet quartic quartic curve quartic equation quartic equation with one unknown quartic extension quartic graph quartic manifold quartic parabola quartic polynomial quartic reciprocity theorem quartic residue quartics quartic surface quartic symmetric graph quartic symmetry quartic vertex-transitive graph Quartier Latin

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