geodetics
noun [ U ] mathematics specialized uk/ˌdʒiː.əˈdet.ɪks/ us/ˌdʒiː.əˈdet̬.ɪks/ (also geodesy, /dʒiːˈɒd.ə.si/ /dʒiːˈɑː.də.si/)
大地测量学
the branch of mathematics dealing with the measurement and representation of the earth
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