“countersink”的概念、定义、翻译、参考文献-科学参考

单词	countersink
释义	countersink [`kau̇nt·ǝr´siŋk] ^{DESIGN ENGINEERING} The tapered and relieved cutting portion in a twist drill, situated between the pilot drill and the body.
随便看	modified Bessel equation modified Bessel functions modified betatron modified constant-voltage charge modified exponential curve modified gunmetal modified Hankel functions modified index of refraction modified Julian date modified Lambert conformal chart modified Lambert conformal projection modified Lewis acid modified mean modified precision approach radar modified rayon modified refractive index modifier modifier gene modifier register modify modify structure modillon moding modiolus modula-2

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