“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	involute spline involute spline broach involution involutional melancholia involutional psychosis involution form involvucel involvucellate inward bound inward-outward dialing system inyoite I/O Io IOCS iodargyrite iodate iodcyanin iodic acid iodic acid anhydride iodide iodide process iodine iodine-131 iodine bisulfide iodine cyanide

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