单词	adamantine drill
释义	adamantine drill noun : a tubular well-drilling bit with hardened steel shot that revolve under the rim of the rotating tube Word History First Known Use circa 1904, in the meaning defined above
随便看	thiol thiolic thiolic acid thiols thion- thionaphthene thionate thionates thionation thione thionic thionic acid thionines thionins thionium thionyl thionyls thiopental thiopentals thiophen thiophene thiophenes thiophenine thiophenol thiophens

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