“sharpening stone”的概念、定义、翻译、参考文献-科学参考

单词	sharpening stone
释义	sharpening stone [`shär·pǝ·niŋ ´stōn] ^ENGINEERING A device such as a whetstone used for sharpening by hand.
随便看	p-type semiconductor p-type silicon Pu puberty puberulic acid pubic arch pubic crest pubic height pubic symphysis pubis public address system public area public communications service public correspondence public data public health public-key algorithm public network public pack public radio communications services public-safety frequency bands public-safety radio service public switched network public utility public works

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