planimeter
planimeter[pləˈnɪmɪtə]noun- an instrument for mechanically measuring the area of a plane figure
侧面仪,面积仪,求积仪
派生planimetricadjectiveplanimetricallyadverbplanimetrynoun语源- mid 19th cent.: from French planimètre, from Latin planus 'level' + -mètre ('instrument) measuring'
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