“direct or reversecirculation rotary drill”的概念、定义、翻译、参考文献-科学参考

单词	direct or reversecirculation rotary drill
释义	direct or reversecirculation rotary drill Encyclopedia 工学桩工机械释 direct or reversecirculation rotary drill正反循环回转钻孔机依靠钻具回转运动切削地层成孔，以正循环和反循环方式排渣的潜水式钻孔机。
随便看	partial pressure vacuum gauge partial prestressing ratios partial privatization partial probability partial problem of eigenvalues partial product partial quotient partial radial distribution function partial radial distribution function, partial RDF partial radial distribution function; partial RDF partial radiation conditions partial range partial rank correlation coefficient partial rate factor partial RDF partial realization problem partial reciprocal difference partial recursive function partial recursive operator partial recursive scheme partial recursivity partial reductio ad absurdum partial refinement partial regression partial regression coefficient

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