英语词汇“graduated arc”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	graduated arc
释义	graduated arc 基本例句分度弧 An early instrument for measuring altitude of celestial bodies, consisting of a90=graduated arcwith a movable radius for measuring angles.象限仪用来测量天体纬度的一种早期工具，由一个有90度刻度的圆弧和一个用来测量角度的可移动的半径构成
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