“drill column”的概念、定义、翻译、参考文献-科学参考

单词	drill column
释义	drill column [`dril ´käl·ǝm] ^{MINING ENGINEERING} A steel pipe that can be wedged across an underground opening in a vertical or horizontal position to serve as a base on which to mount a diamond or rock drill.
随便看	alivincular alizarin alizarin dye alizarin red alizarin yellow alkadiene alkalemia alkalescence alkali alkali-aggregate reaction alkali alcoholate alkali blue alkalic alkali-calcic series alkali cellulose alkali chlorosis alkalide alkali denaturation test alkali disease alkali emission alkali feldspar alkali flat alkali ion diode alkali lake alkali lead

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