“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	commutative algebra commutative diagram commutative group commutative law commutative operation commutative ring commutator commutator-controlled welding commutator head commutator motor commutator pulse commutator subgroup commutator switch comonomer comose comovement effect compact compact disk compact-disk read-only memory compact H II region compactification compacting garbage collection compaction compact-open topology compact operator

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