“introductory column”的概念、定义、翻译、参考文献-科学参考

单词	introductory column
释义	introductory column [¦in·trǝ¦dǝk·tǝ·rē `käl·ǝm] ^{MINING ENGINEERING} The highest and first column that is inserted in casing a borehole.
随便看	xylenol xylidine xylinite xylite xylitol Xylocopidae xyloid coal xyloid lignite xylol Xylomyiidae xylophagous xylose XY plotter XY recorder Xyridaceae XY switching system Y yacca gum yacht Yagi antenna Yagi-Uda antenna yag laser yak yalca yam

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