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单词 odontograph
释义

odontograph

/ɒˈdɒntəɡrɑːf/ /ɒˈdɒntəɡraf/ /əʊˈdɒntəɡraːf/
Now historical
noun
An instrument for marking or setting out the teeth of gearwheels so that they mesh accurately.

Origin

Mid 19th century; earliest use found in Robert Willis (1800–1875), engineer and architectural historian. From odonto- + -graph.

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更新时间:2024/11/11 12:55:34