“backup tong”的概念、定义、翻译、参考文献-科学参考

单词	backup tong
释义	backup tong [`bak´ǝp ´täng] ^ENGINEERING A heavy device used on a drill pipe to loosen the tool joints.
随便看	ectrodactylia ectromelia ectromelia virus eczema eczematoid reaction ED ED50 edaphic community edaphon Edaphosuria Eddington limit Eddington's model eddy eddy coefficient eddy conduction eddy conductivity eddy correlation eddy current eddy-current brake eddy-current clutch eddy-current damper eddy-current heating eddy-current loss eddy-current sensor eddy-current tachometer

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