“pilot hole”的概念、定义、翻译、参考文献-科学参考

单词	pilot hole
释义	pilot hole [`pī·lǝt ´hōl] ^{DESIGN ENGINEERING} In metal-forming operations, a prepunched hole in a metal strip into which the pilot component of the die enters in order to assure precise registration of the strip at each work station. ^ENGINEERING A small hole drilled ahead of a larger borehole. ^{MECHANICAL ENGINEERING} A hole drilled in a piece of wood to serve as a guide for a nail or a screw or for drilling a larger hole.
随便看	amine amine oxidase aminiform aminoacetic acid amino acid aminoaciduria amino alcohol amino-, amin- aminocarb aminocide amino diabetes aminodiborane aminoethane amino group amino nitrogen aminopeptidase aminophenol aminophylline amino plastic aminopolypeptidase aminoprotease aminopterin aminopyrine amino resin amino sugar

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