“drill floor”的概念、定义、翻译、参考文献-科学参考

单词	drill floor
释义	drill floor [`dril ´flȯr] ^ENGINEERING A work area covered with planks around the collar of a borehole at the base of a drill tripod or derrick.
随便看	Freeman-Nichols roaster freemartin free meander free milling free-milling gold free-milling ore free module free moisture free molecule free molecule flow free motional impedance free oscillation free-piston engine free-piston gage free-point indicator free port free progressive wave free quark free radical free-radical reaction free recoil free-recoil mount free recombination free rocket free run

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