“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	XPS X punch x-radiation x-ray absorption x-ray absorption near-edge structure x-ray analysis x-ray astronomy x-ray background x-ray binary x-ray burster x-ray cluster x-ray crystallography x-ray crystal spectrometer x-ray diffraction x-ray diffraction analysis x-ray diffractometer x-ray emission x-ray film x-ray fluorescence x-ray fluorescence analysis x-ray fluorescent emission spectrometer x-ray fluorimetry x-ray generator x-ray goniometer x-ray hardness

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